Ensim Corporation


Ensim® Pro and Ensim Basic 3.7 for Linux® (LS) Upgrade Guide

April 2, 2004

Introduction

This guide provides instructions for upgrading to the latest version of Ensim® Pro and Ensim Basic 3.7 for Linux® (LS) from the following versions.

Sections in this guide include:

About the upgrade

Upgrading to the latest version of Ensim Control Panel simply involves downloading the Installer script, then running this Installer file on the target server.

Important icon

Sites hosted on Ensim Control Panel will be accessible during the upgrade and services such as Web, FTP, and Email will continue to function, except when the site is being upgraded. However, the control panels will be inaccessible during the length of the upgrade. This could typically range from a few minutes to a few hours depending on the number of sites hosted on the server.

The time required to upgrade may vary depending on your server hardware (CPU and memory resources available), the speed of your network connection, and the number of sites hosted on Ensim Control Panel server.

Typically, the time required to upgrade the core Ensim Control Panel server is approximately 45 to 50 minutes and the time required to upgrade the sites hosted on Ensim Control Panel is approximately 1 minute per site.

So, assuming there are 20 sites hosted on the Ensim Control Panel server, it will take 65 to 70 minutes to complete the upgrade (45 to 50 minutes for the server and 20 minutes for 20 sites).

Before you upgrade

The following section describes the minimum system requirements and provides a checklist to help you prepare for the Ensim Control Panel upgrade.

System requirements

To upgrade to the latest version of Ensim Control Panel, your system needs to meet these requirements:

Table 1. System requirements for upgrading to Ensim Control Panel
System requirements for upgrading to Ensim Control Panel
Kernel version
2.4.20 or later
Disk space
At least 2 GB (free space)
CD-ROMs (Optional)
Two Ensim Control Panel CD-ROMs (if you want the Installer to obtain the Ensim Control Panel installation files from the CD-ROMs)

Note: When you upgrade Ensim Control Panel, the Installer upgrades the operating system files and the Ensim Control Panel files on your server. Since the Ensim Control Panel CD-ROMs contain only the control panel installation files, the Installer obtains the operating system files from Ensim’s FTP server or a local FTP server (if you have configured a local FTP server). If you are using a local FTP server, please ensure that the FTP server is updated with the latest installation files from Ensim’s FTP server. For instructions, please refer to the document Setting up a local FTP server to install Ensim Pro and Ensim Basic 3.7 for Linux (LS) at http://www.ensim.com/support/pro/linux/ 37_index.html.

Other requirements
  • DNS server on network
  • “root” user access

Upgrading the Red Hat kernel

Before upgrading to the latest version of the Ensim Control Panel, ensure that you have kernel 2.4.20 or greater running on your server; otherwise the upgrade will fail with an error. To verify the kernel version currently running on your server, log on to the server as the root user and run the following command at the prompt.

#uname -r

Depending on the kernel version currently running on your server, you must either install or upgrade kernel 2.4.20 and boot the server using this kernel.

Note icon

Kernel 2.4.2. You must upgrade it to kernel 2.4.20 or greater and mkinitrd to mkinitrd 3.3.10-1. If you install kernel 2.4.20 instead of upgrading, the upgrade process fails since there is a conflict between the previous and the later versions of mkinitrd.

Kernel 2.4.7 or greater. You can either install or upgrade kernel 2.4.20 or greater on the server. However, it is highly recommended that you install the new kernel instead of upgrading to it, since the server can still boot using the older version of the kernel if there is an issue with the newer version.

Procedure icon

To upgrade the kernel:

  1. Download the latest version of the kernel from either Ensim’s FTP server ftp://ftp.ensim.com, your local FTP server or an external site.
    1. If you are using Ensim’s FTP server or your local FTP server to download the files, connect to the server with the following user name and password.

      2. User name: ensimwpl

      Password: ensim94089

      #ncftp -u ensimwpl -p ensim94089 <ftp_server_name>

      where <ftp_server_name> is the host name of the FTP server from where you want to download the kernel.

    2. Change to the apt/redhat/7.3/en/i386/RPMS.kernel directory on the FTP server.

      3. #cd apt/redhat/7.3/en/i386/RPMS.kernel

    3. Download the file to the server on which you want to upgrade Ensim Control Panel.

      4. #mget kernel-2.4.20-<release>.<processor_type>.rpm

      where:
      <processor_type> is the type of the processor in your server
      <release> is the latest release of kernel 2.4.20 you have downloaded

    4. Optional: If you have kernel 2.4.2 currently running on your server, you must also download mkinitrd-3.3.10-1 to the server.

      5. #mget mkinitrd-3.3.10-1.i386.rpm

  2. Upgrade or install kernel 2.4.20 depending on the kernel version currently running on your server.
    • If you have kernel 2.4.2 currently running on your server, upgrade the kernel and mkinitrd using the following commands.

      • #rpm -Uvh kernel-2.4.20-<release>.<processor_type>.rpm mkinitrd-3.3.10-1.i386.rpm

      where:
      <processor_type> is the type of the processor in your server
      <release> is the latest release of kernel 2.4.20 you have downloaded

    • If you have kernel 2.4.7 or greater currently running on your server, install kernel 2.4.20 on the server using the following command.

      • #rpm -ivh kernel-2.4.20-<release>.<processor_type>.rpm

      where:
      <processor_type> is the type of the processor in your server
      <release>

  3. Perform post-upgrade tasks, if necessary.
    • GRUB. If your server uses the GRUB boot loader, modify the default option in the GRUB configuration file grub.conf to point to the kernel version 2.4.20-<release>,

      • where <release> is the latest release of kernel version 2.4.20 installed on your server.

      Note the usage of values for the default option.

      0 indicates that the kernel version indicated by the first instance of the title option will be selected.

      1 indicates that the kernel version indicated by the second instance of the title option will be selected.

      Example. If the kernel version 2.4.20-20.7 is displayed in the first instance of the title option, set the default option to 0.

    • LILO. If your server uses the LILO boot loader, please follow the instructions given below.
    1. Update the LILO configuration file to include the latest version of the kernel.

      2. Example. If you had kernel 2.4.18-27.7 running on the server and you have installed kernel 2.4.20-20.7, you must update the LILO configuration file as follows:

      Old LILO configuration file
      New LILO configuration file
      **Changes to the file are highlighted in bold.
      prompt
      timeout=50
      default=linux
      boot=/dev/hda
      map=/boot/map
      install=/boot/boot.b
      message=/boot/message
      linear
       
      image=/boot/vmlinuz-2.4.18-27.7
      label=linux
      initrd=/boot/initrd-2.4.18- 27.7.img
      read-only
      root=/dev/hda2
      prompt
      timeout=50
      default=linux
      boot=/dev/hda
      map=/boot/map
      install=/boot/boot.b
      message=/boot/message
      linear
       
      //comment: new kernel definition
      image=/boot/vmlinuz-2.4.20-20.7
      label=linux
      initrd=/boot/initrd-2.4.20-20.7.img
      read-only
      root=/dev/hda2
      //comment: old kernel definition
      image=/boot/vmlinuz-2.4.18-27.7
      label=linux_old
      initrd=/boot/initrd-2.4.20-4.img
      read-only
      root=/dev/hda2

      Note icon

      If you have installed kernel 2.4.20 and chosen to retain the old kernel definition, you will be allowed to choose between the two kernels when you restart the server. You must boot the server using kernel 2.4.20 or greater before you upgrade Ensim Control Panel.

    2. Verify the changes made to the LILO configuration file using the following command.

      3. #lilo -v -t

      If the command results in error messages, you must edit the file to resolve the errors.

    3. If the changes to the LILO configuration file are successfully verified in step 4, update the LILO configuration settings using the following command:

      4. #lilo -v

  4. Restart the servers using the following command.

    5. #reboot

Upgrade checklist

Use the following checklist to verify that you have adequately prepared your system for a successful upgrade.

Table 2. Upgrade checklist
Task
Status
  1. Have you backed up the hard disk?

Note: Please back up the entire hard disk before upgrading to prevent loss of data if the upgrade fails.

¨
  1. Are all sites in a consistent state?
To ensure that all sites are consistent:
  • Log on as the Appliance Administrator.
  • Select Site Manager from the left navigation bar.
  • In the Display field at the bottom of the page, click the arrow and select All Sites.

    • Sites that are inconsistent display the following message:

    This site is currently in an inconsistent state. This may be the result of an active or failed edit.

See Sites using Microsoft Frontpage Server Extensions left in an inconsistent state for information on restoring a site to its consistent state.
¨
  1. Is Microsoft® FrontPage® consistent on all your sites?
Microsoft FrontPage must be consistent on all your sites for the upgrade to succeed.
To verify that Microsoft FrontPage is consistent on all sites, log on to the server as the root user and run the following command at the prompt:
# /usr/local/frontpage/version5.0/bin/owsadm.exe -o check -p all
¨
  1. Have you verified the kernel version installed on your server?

    2. You must have kernel version 2.4.20 or later installed on your server. If you have a previous version, you must upgrade to version 2.4.20. For instructions, please refer to the section Upgrading the Red Hat kernel.

¨
  1. Have you reviewed your customizations and completed all necessary pre-upgrade steps?
Refer to the section, Appendix A: Using the Ensim Control Panel Pre-upgrade Checker to review your customizations for compatibility.
¨
  1. If you have configured the Installer to obtain the Ensim Control Panel installation files using a local FTP server or the Ensim Control Panel CD-ROM, verify that the Installer has access to these repositories.
    • Local FTP server: The Installer obtains the installation files from the specified FTP server. You need to specify the server name or IP address, the installation tree directory name, and the user name and password. If you are using anonymous FTP, set the user name to “anonymous” and the password to your “email address.”
    • Ensim Control Panel CD-ROM: Two Ensim Control Panel CD-ROMs. Please ensure that the Installer has access to the CD-ROMs for obtaining the control panel installation files. Also ensure that it has access to Ensim’s FTP server or a local FTP server (if you have configured one) for obtaining the operating system files.
¨

Upgrading to the latest version of Ensim Control Panel

The following section provides instructions for upgrading to the latest version of Ensim Control Panel.

There are two modes of upgrading Ensim Control Panel.

Table 3 lists the parameters required for the installation script, LWPInstaller.sh.

Table 3. LWPInstaller.sh script parameters 
Parameters
Value
Description
--ftp_server
(Optional
parameter)
URL of the FTP server
Example: ftp1.example.com
Indicates the FTP server from where the Ensim Control Panel installation files and the operating system files are downloaded. If you have configured a local FTP server, specify the local FTP server URL. The default FTP server is
ftp.ensim.com.
--classic
(Optional
parameter)
None
Indicates text-based upgrade of Ensim Control Panel.
--no-quotacheck
(Optional
parameter)
None
Indicates that no validation is performed on existing quotas.
--email
(Mandatory parameter)
Email address
Example: admin@example.com
Indicates the email address to which success or error messages are sent.
--cdrom
(Mandatory parameter)
Yes/yes/Y/y. Indicates that the Ensim Control Panel CD-ROMs are used to obtain the installation files.
No/no/N/n. Indicates that an FTP server is used to obtain the installation files.
Indicates whether the Ensim Control Panel CD-ROMs or an FTP server is used to obtain the installation files.
--help
None
Displays help on the command parameters.

Important icon

Before you upgrade, ensure that you meet the system and software requirements specified in the section Before you upgrade.

The following section describes the steps to upgrade Ensim Control Panel.

Procedure icon

To upgrade Ensim Control Panel:

  1. Log on to the server on which you want to upgrade Ensim Control Panel.
  2. Download the Installer script from the Ensim support page http://www.ensim.com/support/downloads.html.
  3. Run the script by typing the following command at the prompt. Refer to Table 3 for the parameter descriptions.

    4. #sh LWPInstaller.sh -- --ftp_server=<ftp_server_url> --no-quotacheck
    --email=<email_address> --cdrom=<yes/no>

    Important icon

    The LWPInstaller.sh script is a wrapper that embeds the Installer script. The additional hyphens (--) are necessary to indicate to the wrapper that all parameters successive to the hyphens (--) must be passed on to the embedded Installer script.

  4. Optional: If you chose the Ensim Control Panel CD-ROM option, you will be prompted to insert the CD-ROMs (disk 1 and disk 2). Note that the installer will still need to connect to Ensim's FTP server or the local FTP server to download the operating system’s RPMs.
    1. Insert the Ensim Control Panel CD-ROM (labeled Ensim Control Panel CD 1) in the disk drive of your target server and press Enter.
    2. After copying the files from Ensim Control Panel CD 1, the disk is automatically ejected and you are prompted for disk 2.
    3. Insert the Ensim Control Panel CD-ROM (labeled Ensim Control Panel CD 2) in the disk drive of your target server and press Enter.
      4. Example icon

      In the following example, the command upgrades Ensim Control Panel using the curses-based, or default mode. 

      #sh LWPInstaller.sh -- --ftp_server=ftp.ensim.com --no-quotacheck --email=admin@example.com --cdrom=n

      The Installer starts upgrading your existing version of Ensim Control Panel. All the services and add-ons provided by Ensim Control Panel are installed. If you encounter problems during the upgrade, please use the information in Appendix C: Troubleshooting upgrade issues to resolve the issues.

      Note icon

      This process takes some time and depends on the number of sites hosted on the server. You may encounter disk quota warnings during the upgrade; these warnings are not indicative of any problem with the upgrade and may be disregarded.

      The Installer automatically runs the Pre-upgrade Checker before upgrading to Ensim Control Panel. At the end of the check, it displays the number of errors or warnings encountered. The results of the pre-upgrade check (list of checks, status of each check, and details about errors or warnings) are logged in the /var/log/ensim/installer.err log file. See Appendix A: Using the Ensim Control Panel Pre-upgrade Checker for details of the Pre-upgrade Checker and its results.

      Please refer to the setup.log file located at /var/log/appliance/ for details.

      Important icon

      Do not disconnect if the upgrade has been initiated over a remote connection, using Telnet or SSH. However, if you are disconnected due to technical reasons, reconnect to your server and locate the message "WEBppliance is upgraded to 3.7.1-<build_version>" in the file /var/log/appliance/history. The message indicates that the Ensim Control Panel upgrade has been completed.
      If you are unable to locate the message, run the command, ps -ax
      If there are RPM processes active, the command will list out the RPMs (running RPM processes indicate that the upgrade is in progress). Do not interrupt the upgrade.
      After the upgrade is completed successfully, restart the server manually using the command: #/etc/rc.d/init.d/webppliance restart



Post-upgrade tasks

This section explains the tasks that you need to do when you finish upgrading Ensim Control Panel.

Upgrading the Apache 1.3 configuration file

Ensim Control Panel leaves the httpd_app.conf file untouched during the upgrade, as it may contain changes made by you or other installed Web-based applications. The httpd_app.conf file is preserved so that custom modifications are not lost. However, because of this, some of the new Web-based features will not be available to the upgraded sites.

In order to take advantage of the new features, you need to merge your custom configuration changes with the template httpd_app.conf provided by Ensim Control Panel.

Procedure icon

To upgrade the Apache 1.3 file httpd_app.conf:

  1. Back up your existing /etc/httpd/conf/httpd_app.conf file.
  2. Copy the file /usr/lib/opcenter/apache13/install/httpd_app.conf to
    /etc/httpd/conf/httpd_app.conf
  3. Replace all instances of LOCALIP and LOCALHOST in /etc/httpd/conf/httpd_app.conf with the Ensim Control Panel server IP address and the host name, respectively.
  4. Modify the /etc/httpd/conf/httpd_app.conf file and add your custom configuration parameters.
  5. Since you are upgrading from WEBppliance 3.5.x, add the following line to the merged httpd_app.conf file. This will allow Tomcat 3 to work

    6. LoadModule jk_module modules/mod_jk-eapi.so

  6. Restart Apache by using the following command.

    7. #/etc/rc.d/init.d/httpd13 restart

Upgrading the SquirrelMail file config.php

After the upgrade, some sites are unable to access SquirrelMail. To resolve this, you will need to upgrade the SquirrelMail file config.php.

Procedure icon

To upgrade the SquirrelMail file, config.php:

  1. Back up the original config.php file located in
    /home/virtual/<domain>/var/www/squirrelmail/config.
  2. Copy the config.php file located in
    /etc/virtualhosting/templates/sqmail/var/www/squirrelmail/config/config.php to the broken site’s directory
    (/home/virtual/<domain>/var/www/squirrelmail/config/config.php).
  3. After copying the file, change the file owner and group to match that of the original file.
  4. If the original config.php file has been modified by Site Administrators, then they should merge the old and new config.php files.

Regenerating Sendmail configuration file after an upgrade

Ensim Control Panel does not regenerate the Sendmail configuration file after an upgrade in order to retain any customizations made to the file. However, you may need to regenerate the file after an upgrade to take advantage of new service features or security fixes.

Note icon

Before you regenerate the Sendmail configuration file, back up your existing Sendmail configuration file using the following command.

#cp /etc/sendmail.cf <directory>/sendmail.cf.bak

where <directory> is the directory in which you want to copy the file.

To regenerate the file after an upgrade:

  1. Log on to the Ensim Control Panel server as the root user.
  2. Regenerate the Sendmail configuration file by typing the following command at the prompt.

    3. #/usr/bin/m4 /usr/lib/opcenter/sendmail/install/sendmail.mc > /etc/sendmail.cf

  3. Now, restart the Sendmail service.

    4. #/etc/rc.d/init.d/sendmail restart

Appendix A: Using the Ensim Control Panel Pre-upgrade Checker

Customers sometimes customize Ensim Control Panel to meet the unique needs and complexities of their hosting environment. An upgrade process, however, adversely impacts these customizations, and requires appropriate actions to retain them during an upgrade or recover them after the upgrade. Such customizations also have the potential to fail the upgrade.

The Ensim Control Panel Pre-upgrade Checker is a tool that evaluates the compatibility of customizations (on an existing Ensim Control Panel server) with the latest version of Ensim Control Panel. The tool provides a report that conveys possible conflicts and ways to resolve them. The Pre-upgrade Checker ensures that existing Ensim Control Panel servers can be efficiently upgraded.

The Installer automatically runs the Pre-upgrade Checker before upgrading an existing version of the Ensim Control Panel. At the end of the check it displays the number of errors or warnings encountered. The results of the pre-upgrade check (list of checks, status of each check, and details about errors or warnings) are logged in the /var/log/ensim/installer.err log file.

Interpreting the results of the pre-upgrade check

As the Pre-upgrade Checker performs each check, it displays the name and brief description of the check and the outcome of the check.

The outcome can be any of the following:

When the outcome of the check is a warning or an error, details about the exception are provided. More details can be found in the Pre-upgrade Checker report in the installer.err file available in the /var/log/ensim directory.

The Pre-upgrade Checker report provides the following information:

At the end of the check, a summary of the results is displayed, in the following format:

SUMMARY for <hostname>: <n> error(s), <m> warning(s), <k> domain(s) with issues

Where:

<hostname> is the name of your Ensim Control Panel server

<n> indicates the number of errors

<m> indicates the number of warnings

<k> indicates the number of domains for which exceptions have been observed

Impact of customizations on the upgrade process

The following sections list additional customizations that need to be addressed before or after the upgrade.

Important icon

If you have customized Ensim Control Panel, we recommend that you contact Ensim Support to verify the impact of these customizations on the upgrade process. Ensim provides professional services that help you with the upgrade process.

The following is a list of:

Customizations that do not require pre-upgrade or post-upgrade actions

The following customizations do not require any pre-upgrade or post-upgrade actions.

Customizations that require pre-upgrade or post-upgrade actions

The following customizations require either pre-upgrade or post-upgrade actions.

Appendix B: Ensim Control Panel (LS) Installer for Advanced Users

As an advanced user, you can opt for a text-based upgrade of Ensim Control Panel by running the Installer script LWPInstaller.sh with the --classic option at the command prompt.

To do so, download the Installer script from the Ensim support page http://www.ensim.com/support/downloads.html, then run the script with the parameters listed in Table 3.

Procedure icon

To upgrade Ensim Control Panel:

  1. Log on to the server on which you want to upgrade Ensim Control Panel.
  2. Download the Installer script from the Ensim support page http://www.ensim.com/support/downloads.html.
  3. Run the script using the --classic option. Refer to Table 3 for parameter descriptions.

    4. #sh LWPInstaller.sh -- --classic --ftp_server=<ftp_server_url> --no-quotacheck
    --email=<email_address> --cdrom=<yes/no>

    Important icon

    The LWPInstaller.sh script is a wrapper that embeds the Installer script. The additional hyphens (--) are necessary to indicate to the wrapper that all parameters successive to the hyphens (--) must be passed on to the embedded Installer script.

  4. Optional: If you chose the Ensim Control Panel CD-ROM option, you will be prompted to insert the CD-ROMs (disk 1 and disk 2). Note that the installer will still need to connect to Ensim's FTP server to download the operating system’s RPMs.
    1. Insert the Ensim Control Panel CD-ROM (labeled Ensim Control Panel CD 1) in the disk drive of your target server and press Enter.
    2. After copying the files from Ensim Control Panel CD 1, the disk is automatically ejected and you are prompted for disk 2.
    3. Insert the Ensim Control Panel CD-ROM (labeled Ensim Control Panel CD 2) in the disk drive of your target server and press Enter.
      4. Example icon

      In the following example, the command upgrades Ensim Control Panel using the text-based, or --classic option.

#sh LWPInstaller.sh -- --classic --ftp_server=ftp.ensim.com --no-quotacheck --email=admin@example.com --cdrom=n

Appendix C: Troubleshooting upgrade issues

If you encounter problems that you cannot troubleshoot or resolve using the information in Table 4, or the log files (see Log files), contact Ensim for online support at https://onlinesupport.ensim.com

Table 4. Troubleshooting upgrade issues (Installer)  
Symptom
Description
Solution
When you run the
command,
“hostname” the value "myhost" is returned by the command instead of “myhost.mydomain.com”.
The host name of the server is incorrect.
Check the file /etc/sysconfig/network. The host name must be a fully qualified domain name. See the following example.
Incorrect: myhost
Correct: myhost.mydomain.com
During upgrade, the following message is displayed: check_hostname <FAILED>.
The host file is incorrect.
The file /etc/hosts should contain the host name and IP address of your server (see the following example). If it does not, use an editor to modify the file.
Example 
---/etc/hosts begin file-- 
127.0.0.1 localhost.localdo-
main localhost 
1.2.3.4 myhost.mydomain.com my-
host 
---/etc/hosts end file--
where 1.2.3.4 is the IP address of myhost.mydomain.com
Unable to connect to Ensim’s FTP server.
 
Failed to download the metadata from ftp.ensim.com.
Error initializing setup.
Ensure that you are connected to the Internet.
Refer to the updates.log file located at: /var/log/ensim/
Cannot download or install updates.
Error downloading/installing updates.
The error log contains a list of all the updates that could not be downloaded. Download these updates and install them on the server, before re-starting the server to upgrade Ensim Control Panel.
Refer to the updates.log file located at: /var/log/ensim/
Cannot download Ensim Control Panel.
Error downloading Ensim Control Panel.
Ensure that you are connected to the Internet.
Refer to the updates.log file located at: /var/log/ensim/

Log files

Ensim Control Panel creates log files that record the various actions and events that qualify an upgrade. You may refer to the log files to troubleshoot fault points encountered during the upgrade. The log files are emailed to the specified email address.

Table 5. Log files and their description 
File name
Location
Description
upgrader.log
/var/log/ensim/
Maintains a list of actions recorded while:
  • Downloading and installing the latest version of “rpm” RPMs. Both successful and unsuccessful events are recorded in this file.
  • Downloading the latest version of the RPMs required to
    upgrade Ensim Control Panel.
  • Downloading the additional RPMs required to upgrade
    Ensim Control Panel.
Provides the following information:
  • Name of the event

Note: This file is available only during the initial part of the upgrade process. It gets deleted after the upgrade process is completed.

upgrader.err
/var/log/ensim/
Maintains a list of actions recorded while:
  • Downloading and installing the latest version of “rpm” RPMs. Both successful and unsuccessful events are recorded in this file.
  • Downloading the latest version of the RPMs required to upgrade Ensim Control Panel.
  • Downloading the additional RPMs required to upgrade Ensim Control Panel.
Only error messages are recorded in this file.
Provides the following information:
  • Brief description of the error
  • Action to be taken to resolve the error

Note: This file is available only during the initial part of the upgrade process. It gets deleted after the upgrade process is completed.

installer.log
/var/log/ensim/
Maintains a list of successful and unsuccessful events recorded during the upgrade of Ensim Control Panel and provides a cumulative summary of the following log files:
  • upgrader.log
  • updates.log
installer.err
/var/log/ensim/
Maintains a list of unsuccessful events recorded during the upgrade of Ensim Control Panel and provides a cumulative summary of the following log files:
  • upgrader.err
  • updates.err
This file also includes the output of the Pre-Upgrade Checker.

Feedback and support

To take advantage of Ensim's support services or to find additional product documentation, visit the Ensim support site, http://support.ensim.com.

To log in to Ensim online support, go to https://onlinesupport.ensim.com.

To provide feedback about Ensim products or documentation, please use the feedback form at http://www.ensim.com/about/feedback.asp.

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© 2004 Ensim Corporation. All rights reserved.

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