At first I forgot to open up the ports that wow needs, 6112-6114, 3724, 1119, and 4000. I went ahead and added those to the port forwarding section for my wifes computer. Then I went to add those same ports for my PC and this new Linksys will not allow me to open up the same ports to more than one internal IP address at a time. I was trying to find a way to open up these ports on the firewall across the board, but I having trouble finding a way to do so.
I setup Port triggering for those specific ports, but the "help" section on the routers config page for triggering states that the router will remember the port for the first IP that requests those ports, which makes me think that once the second PC running wow tries those ports they will not be allowed. Does anyone else have experience running more than one WOW client behind a Linksys Firewall?