Right, I have set up this router almost spot on for our raping bandwidth student house. I have set up a firewall to block all ports on all IP's (except mine ) with the exception of specific ones such as msn and the html ports. This runs flawlessly, except when my pc is occasionally off the IP's change and some other pc takes over my IP. How can I stop this from happening? What I would really like to do is assign each persons MAC address to an IP. Is this possible?