I'm setting up a home network and need some help. I have a Comcast cable modem connected to a 5 port router in my basement. In my home office I have my Mac pro connected to a wall port through my time capsule. I have two other Cat5e outlets in the house. The problem I am running into is in my living room where I tried to plug my tv into the network. The auto setup will not work and I have tried manual but can't find a gateway address to plug in and have tried several that don't work. I have tried the usual resetting the modem and the router but that hasn't helped. The tv asks for ip address, subnet mask, dns server and gateway. How do I find the gateway on my network with a mac and what settings should I use? Thanks