IceChat 7 is the previous version of the IRC client IceChat.
It runs on all Windows version up until and including Windows 8, and on Linux under Wine.
Extensive help on the scripting that is supported by IceChat 7 is found under the site's Scripting menu, including:
Additional help on other topics can be found under the Help menu entry. It includes various topics among them included:
Screenshots for IceChat 7 can be seen here