ChatZilla is an application that is written in the Mozilla XML User Interface Language, in short XUL. It is incorporated in the Mozilla SeaMonkey internet suite and is available as an add-on that you need to run from inside other Mozilla applications like Firebird or Thunderbird.
In short this means that you can’t restart your browser without leaving IRC. If you want to run ChatZilla as a stand alone application you must use the program XULRunner. ChatZilla on XULRunner is one way, but if you already have a copy of Firefox 3.0 or higher installed you also have a copy XULRunner. To run your copy of ChatZilla with Firefox do this:
C:\Program Files\Mozilla Firefox\firefox.exe" -app "C:\Program Files\ChatZilla\application.ini
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