i googled it and actually found another thread here with a similar question. so yeah, i tried to research it.
im just confused as to why this guy sticks with xp home when he has systems that could benefit more from a 64bit os. i thought maybe the os didnt matter and cs4 would somehow magically work as 64bit... lofty idea i know.
More than likely the reason why he gave you a 32bit copy of XP instead of a 64bit copy is that he probably buys them in bulk and since most people use 32bit OS's than that is what he had stock of.