I have two computers networked at home using Windows XP Home ed. Both have NIC cards in them and I have a Linksys BEFSR41 Router. Is it better to have two IP addresses from my COX cable isp or use 1 ip address for both. I like to play UT with my kids on the computers. If the 1 IP is better How do I set up the 1 ip address for both computers.?