I see your username on the boards is "shadowlife" and you no doubt have a password that goes with that. This is probably what you typed in when trying to enter the chat room. This probably wont work believe it or not.
You have to actually ‘register’ to join the chat rooms as well. Registering to the message boards is just for that section of the site only.
When you click the register button to register for the chat room you again will be asked to create a username and password (but this will be specifically for the chat rooms). It could be different to the one you use for the boards but most of us use the same username and password as per our message boards log ons. It makes it easier for people to know us around here.
The register process for the chat rooms also needs a valid email address as you’ll see.
Hope that helps. Contact the administrators if things don’t seem to work for you.