here are all the things I can think about you probably tried some but I don't know which ones so
1try getting the latest version of java and 2than make shure there isn't any parental control,
3also make shure you are not connecting through your school, they have a tendancy of blocking p2p networking.
4you might also want to check this thread http://www.gnutellaforums.com/showth...threadid=24523
and this one: http://www.gnutellaforums.com/showth...threadid=26886
this thread is all about ports maybe you should read it it might help,
http://www.gnutellaforums.com/showt...&threadid=24523
5if that doesn't solve the problem tell us if you have a firewall, a proxy, or windows service pack 2