The only thing is if you Port Forwarded correctly and the firewall you are seeing was the Nat firewall in your router it would disappear..
Did you know that you can log into your router by entering your ISP's IP number into the address bar in your browser....
Try logging in and have a look at the UPnP set up...
When you Port Forwarded how did you get into your router then ??
Did you go to the port forwarding site and follow these instructions ??
Make sure you don't forget the static IP part....
http://www.portforward.com/english/r...2/Limewire.htm