How do I block an ip address from my home network. To be more specific, My kids have certain contacts on their MSN that I have told them to block, and they keep bringing them back either with the same name or a different one. I've use MSN Sniffer to find out the IP of the computer that they are coming from, and was hoping I could simply block the IP and they wouldn't be able to show up on my kids MSN. Is this possible? THanks