Well, if he wants to reformat his computer, of course, he can install it...but if he wants to
upgrade it (which actually I don't recommend*), he can't install the xp pro unless he
slipstream SP2 in it. (You can use
nLite if manual slipstreaming is not of your interest.
)
*The reason why I don't recommend it is that, from my experience, it's always slowed down my computer... only for your information