Aha! I just realized you are talking about the Chat room, well, call me dumb too that I didn't catch on from "Mudchatters".
It doesn't work for me in Netscape browser, Jean, but if I use Explorer everything works ok. I'm on a Mac. I'm not sure if that solves your problem, but if you are using a Mac, you need to use Explorer instead of Netscape in order to get the Mudchat room to work.