Is your LW connected at all? How many green/blue connection bars do you see?

Try removing all LW rules from Norton's firewall & then start from scratch & add new ones. The 2 links below have some info.
PortForward.com - Free Help Setting up Your Router or Firewall
http://www.gnutellaforums.com/226610-post6.html

Please give us your details
System details - help us to help you -> Provide these details when you post!!!