Quote Originally Posted by Jack Sawyer
agreed

probable keylogger
could be some sort of remote desktop trojan too, which would explain why will's pc got slow. do you have a log of your network activity? browsing been slow too?
Was just about to say that... It all points to something like that. Will's PC getting slow, crashing etc, and suddenly your account gets hacked. That file was most likely a keylogger or infected with some kind of trojan.

As they've mentioned. You got his IP - check with PokerStars which IP played when all your money disappeared.