I have a Di-Link 504g which doesn't have UPnP abilities but I believe your model does. To find out how to log into it or manually port forward to by-pass the NAT firewall see http://www.portforward.com/english/r...+/Limewire.htm

There should be an option there somewhere for UPnP activation. I don't know which section they have it in. I had to manually port forward my device!

BTW Cox is not over p2p sharing friendly, see ISP's known to BLOCK or Filter p2p or specifically Limewire