Have a look here:
http://www.gnutellaforums.com/showth...threadid=51357

Make sure your firewall's configured. Don't run 2 firewalls together, it'll cause problems. Read the info about UPnP. If your router uses UPnP, you'll have to have it turned on in the unit & also in LW (tools > options > advanced > firewall. Tick 'use UPnP & apply). Do the port test.