Kevin Hi.
How to use Manual Port faward
Universal Plug and Play may not be working properly Due to this update. "Security Update for Windows XP (KB931261)"
Removing this update is not Recomended & could make your computer vonarable to attack.
If this update is installed on your computer & UPnP is in use in Limewire,
Try switching to Manual Port faward, using port numbers between 45000 To 65000
Both Manual Port faward No, & listening port should be set at the same number
In LimeWire, GO to Tools/Options/Advanced/Firewall Config & use Manual Port faward.
This link will open in the settings page for port forwarding your router
& don't forget to create a static IP first.
PortForward.com - Free Help Setting up Your Router or Firewall
If you need help just shout