sydney16,
When you replaced the gnutella.net file, did you make sure that LW was properly closed at the time? If not, do it again with LW completely closed.
You could also try changing ports...in LW tools > options > advanced > firewall config. change LW's listening port to something in the range of 49152 - 65535 (say 65000) > apply > ok.
When you reinstalled XP with SP2, did you use any of the connections patches available? Just in case that's the issue, have a look at the thread here for a link to a patch.
http://www.gnutellaforums.com/downlo...6-06-15-a.html
And if nothing works, you could try port forwarding for your router. If you can find your router in the list here, you'll find detailed instructions for port forwarding.
PortForward.com - Free Help Setting up Your Router or Firewall
Don't forget to set up a static IP address if that's part of the instructions.
pegleg123,
See whether any of the fixes here work.
If LW Will Not Connect
If not, post back with your system details.