ID has no real meaning. What is an ID? the macaddress, IP#, yahoo ID, what? . . And if you are having to ask a question like this even trying what you ask is a sever problem, because there is no such thing as a sure fire way to access a computer. Every computer is different and depending on the programs on it certain things will have to be changed.. . I'm not trying to sound like an ass, but you know trying to hack someone elses pc w/o their permission is illegal and you just ask in a place where everyone on the freaking planet can see (if you don't think Yahoo tracks stuff like this you are dead wrong).