Tried everything? Please don't make such claims when you haven't! Did you try these things:
http://www.gnutellaforums.com/connec...t-connect.html as it is sitting as a
Sticky at the top of this forum section of Connection problems.
So .. what caused your sudden problem? Did you update your system software or firewall or your version of LW? Did the program suddenly crash on you recently?
As it says in the forum rules, you need to supply these details for connection problems:
System details - help us to help you (click on blue link)
Don't worry we get lots of people claiming they tried everything. lol

(BTW Do as the forum rules suggest & it makes it easier for all of us.)
(I know, big forum, haste to get issue solved.)