There's a very good chat room based on asp in the Active Server Pages for Dummies book. It gives all the code and is also very instructive on session and application variables. I created a chat room myself by modifying what is in the book. I hope this works for you.
I have the scripts ready with me.<BR><BR>Send me a mail at email@example.com so that i can send them to u.<BR><BR>In case you are going to use them commercially, there will be a price tag attatched.