Room-mate? Sounds like a school dorm or something ... is it? If it is then that might be why you can't connect. Many school dorms block p2p using various techniques as well as special anti-p2p softw. But if your friend can connect ... it's something heard many times of before where one can but the others can't.

Simple test: Using your browser go here: http://www3.limewire.com:6346/ The page should say ‘Test Page was a Success’. What happens when you go there?

Check with your equipment to see if it's UPnP capable. If it is, then your LW set to UPnP should overcome any nat devices. Force IP instructions & sample image & 2 posts after that. BUT at the moment, LW 4.6 has a bug with UPnP run on a lan. See: http://www.gnutellaforums.com/showth...threadid=34327

Make sure your XP & any other firewalls are set to allow LW: http://www.limewire.com/english/content/firewalls.shtml