Is anyone familiar with Winmx chat?

I'm trying to find someone at a specific chat room on/@ WinMX, but I can't figure out how to search for a particular location like that. When I click on the Chat button, I see "filter ", "join" and "close" buttons, and a blank box where it looks like you can type in a url or something (I tried typing in the name of the chat room here, and then clicking on "join ", but nothing happened).
A google search doesn't turn up any help on the subject - is there someone here who might be able to steer me in the right direction?
Thanks!

 

Well I use Winmx and after I clicked chat button I start to see dozens of chat rooms list below and I can then select one of them to go into a chat room. Do you get the list of chatrooms appearing?

 

Thanks, Chuck!
Yesterday I got a long list of chat rooms; this morning I didn't get any. I finally thought to hit the refresh button both at the chat screen and the network screen, and after that, things worked just like you said!
You've made me one happy camper for the day!