Read the post No. 12 of LOTR in the following thread regarding Belkin router:
http://www.gnutellaforums.com/showth...=Belkin+router
In the same thread you'll find a post of Birdy regarding Belkin support page.
And by the way, if you can't reach the page with "Your test worked" it means that your ISP is blocking the port 6346.
You must change the listening port to a higher range, such as 64049 or 47058. Do this in LW as well as in your firewall (XP) and don't use 2 firewalls at the same time. One is enough and the second one will only interfere with the first one.