The Pro Chat Rooms is a multi user chat room script written in PHP/MySQL/Ajax and includes a wide range of features like unlimited chat rooms, customisable text, private chat, avatars, smilies, sounds, user profiles, multi-level chat room management (administrators & moderators), transcripts, IRC type commands and much more...
Demo/Info
http://www.prochatrooms.com/
Download
http://www.mediafire.com/?bjyrxbsflb35xdk