[Johnj]

Try using the in-game browser to find a game. When you choose Internet game does it show you games to join? If it does, can you join a game now?

Look in the routers documentation to see if you can open ports to your game computer. Over at mohadmin.com you can find Dogmeat's Port Guide that will tell you what ports to open to your game computers private IP (192.168.nnn.nnn)

You may have to put your game computer into a "DMZ" (open to the Internet,not protected by a firewall) Zone

Good luck and go join that game