Sorry that he didn't do his homework - that often costs one money. He needs to discuss his situation with the outfit he bought the system from. OTOH, if you "upgrade" to the Business edition, you lose some of the multimedia features of the Home edition. It's looking more and more to me that the four version marketing plan was a boneheaded move on M$'s part - so what's new?
OTTH, you can get XP Pro for $88.
.bh.