FindDc wont get ya banned but it will get you a temp ip ban/realm down for creating games 2 quickly.using netstat -n to find an ip or using c3po maphack tells the ip of game also.
He spawns at the first unique monster you come by in the game ex eldritch,shenk,thresh socket,countess an so on.
heres all the super uniques he can be spawned at
http://www.battle.net/diablo2exp/monsters/super.shtml