LiveZilla is another great open source software, very easy to install, up and running in 10 minutes.

As it is open source, you can customize the way you want.  Ofcourse forward compatibility is not there, but if you know what you are doing, it is okay.

Four step process:

1. Update Header (You can do this while installing itself, there is an option in the setup).  It is straight forward.

2. By default, it will install it to livezilla folder, you may want to rename it to generic term.  You can do this also during the installation process.

Rename all occurances of filezilla.php to {newname}.php in the following files{installation folder}/templates/chat.tpl
{installation folder}/templates/index.tpl
{installation folder}/templates/jscript/jsbox.tpl
{installation folder}/templates/jscript/jsextern.php
{installation folder}/templates/frames/lz_chat_frame.3.2.login.1.0.tpl
{installation folder}/templates/frames/lz_chat_frame.3.2.login.tpl
{installation folder}/templates/frames/lz_chat_frame.3.2.mail.tpl
{installation folder}/templates/frames/lz_chat_frame.3.2.chat.1.0.tpl
{installation folder}/templates/frames/lz_chat_frame.3.2.chat.tpl
{installation folder}/_definitions/definitions.files.inc.php

3. Renaming livezilla.php.  You need to change several files as described below:

4.  Remove File Zilla footer:

lz_chat_frame.4.1.tpl

Note: I tested with 3.1.7.7 version.  You can check at www.fortunesamerica.com

Good Luck!