Have you tried the connection fix as posted here (first fix in the list)?
http://www.gnutellaforums.com/connec...t-connect.html
You might have to wait a while to connect... it can take 5 - 10 minutes
And if so, have you tried any of the other connection fixes in that thread?
If nothing there has worked for you, please post back with your system details as per this link:
System details - help us to help you -> Provide these details when you post!!!