This looks up a player on GameTiger
I took some code from f117bomb's "Web Browser"(Specifically to extract /findplayer from the say command)
Any suggestions welcome... Although it is impossible to join the same server as a person(You need to write down the IP), nor is it possible to pull up the specific server info from a persons name, so don't ask
BTW, it will only look up people on your mod, as it is impossible to join a server using another mod