Originally Posted by Sleepless

But still we are already getting somewhere

You say that Limewire worked before using the wireless router

Did you by any chance forget to add Limewire.exe or your set listeningport to your Windows Firewall ? No, it's there

Have you upgraded your Limewire lately ? Yeah, reformated so it's a fresh install.

Has the brick wall always been there ? Since this install.

Also are you sure that your new router really supports UPnP (not just says it does) No idea. My housemate uses the same router though and his works

Trying Portforwarding your Limewire port is an option. In which case anyone trying to help will need exact name and model of the Linksys. WRT54G