Is there a way to lookup someone IP address from just chatting? and whats that website that looks up IP?

if you direct connect to someone using AIM then there is a way to do an ip ping on their computer using the command prompt. I forgot how to do it, but you may be able to find a website that can help ya. Be careful though because if they know what they are doing they can do it too and they can screw with your comp|||I think you can use an IP sniffer for this.