I think my xp is bootleg cuz I got it from a friend of a friend and its on a recordable cd. It still lets me get updates although I don't usually use updates
xp pro still downloads critial updates even if its a illigal copy. If you need the .net framework 1.1 or media player 10 then you need a validation to update them. There was a way with java script but its since been blocked although there is another way if you look around im not willing to mention it on here