I don't know whether your device supports UPnP. Telnet into it to find if there's a UPnP option. If yes, then enable it, save settings, relaunch LW. Telnet address is probably either 192.168.1.254 or http://192.168.1.254

If there is no UPnP option then forward a port. Find your model here in the left column under Billion http://portforward.com/routers.htm Most important step is setting up a static ip.

All wireless devices have internal NAT firewalls. That's why a port needs to be opened so LW can access through it. Once you've done this, your port test for http://www3.limewire.com:6346/ should work & your brick wall icon for LW should disappear.