Is content filters enabled? If yes, disable it.

Do you have junk filter results set to hide or show? If set to hide, change it to show. Some results might be getting filtered as junk when they are not junk files. In that way if you see anything that is definitely not junk you can select it and click Not Junk button so it trains the filter to know for next time and for similar results.

If doubt UPnP is working properly with LW resulting in being semi-firewalled, then you can forward a port. See Port Forwarding the Dynex DX-E402 Router for Limewire and also http://www.gnutellaforums.com/tips-t...tml#post120010 for LW's settings.
Login details for your router are http://192.168.1.1
Enter admin for both username and password.

I downloaded the manual for your router. It supposedly has UPnP. But sometimes UPnP on some routers is not reliable.