in fact ,there are many flash chat program.123 flash chat is the best one of them. 123 Flash Chat server software is full-featured& high-performance Java chat server plus stunning Flash chat client!
123 Flash Chat Server Software allows you to organize chat-events, collaborative work sessions or online meetings. It brings you high-performance and rock solid stability with fast and easy installation on all major operating systems.
and more details pls check the home page:
www.123flashchat.com
note: there is a demo for vistors to test.and it has 24/7support.
have fun with this chat!