Ok, so my dad bought this game, at my suggestion, cuz I figured he would like it. He has it installed on his computer, and I just put it on mine today. I'm sure he hasn't yet, but I always update my games to the latest version before I play them, however, I didn't know you had to register the product serial to do that. So here's my question, would he still be able to update the game on his computer if I register the game in order to update it on mine?