I have added a web client onto the Amtrak Trainz Group website at: www.amtraktrainz.co.cc (click "chat" on the top of the page). You do not need to register on our forums to use the Chat room.
The web client allows you to easily access the chatroom without having to download a specific program, and still provides almost all the functionality as a regular client. It is also great to use at places that block the use of chat rooms or on computers that you cannot install programs on. Client code provided by www.mibbit.com