how do i get peoples ip address?????

http://www.google.com

Or, do this. Open DOS, and then type "netstat -n." You'll see a list of all the IPs connected to your comp at the moment. Then, without doing anything else, directly connect to the person's PC. Do netstat -n again, and the entry that's there now that wasn't before is their IP.

Also, this belongs in Network Security and Hacking.

You need to ask this in Network Security and hacking man.