for all those like me that wanted a chat that didnt use any database, txt, or raw files to stored the current chat but also were free and very robust, i found this Jive Messenger server service, it's a little program built in java that supports chats with registered users, it means that just certain users can access to the chat, the server seems to control driven flash chats so it is cross platform in some sense i'd saybut what would make you choose this server over others like Flash media server 2, the price of course and also the aspect of registered users is a very good feature on the other hand FMS2 can record video and audio and stream it for sure, something Jive cant. But in these days the very simple IM could be the best such as text and images, i use sometimes the MSN IM but i hardly ever use the camera to talk to my buddies, so if you feel you can be one of the pioneers in this "new" world of IM i really suggest it to you...
cheers!

Where do u get that Software
? i need to host my CHat rooms