1. The first and most important step is setting up a static ip: Static ip for XP

2. Then find your specific model here PortForward.com - Free Help Setting up Your Router or Firewall click on link, find LimeWire on next page, follow directions. BTW I recommend Port forwarding for BOTH TCP & UDP.

3. For your software firewall, I think choose same as your router for port. It can be port 6346, else you can choose an alternate free port such as between ports 49152 - 65535.

4. If still cannot connect, go back to my first post & follow those suggestions again.