Don't turn off the Norton firewall, just configure it See if the links below help.
http://www.gnutellaforums.com/showpo...10&postcount=6

Also try this link. Choose Norton from the list of firewalls.
http://www.portforward.com/english/r...outerindex.htm

If that doesn't help, you'll have to give us some more details...the system details link in my first post shows the info that we need. Your router might have an internal firewall, but who knows???