Hi everybody, I was given a desktop with windows xp on it, the computer was broken, and i want to resintall the windows xp which was in it on another laptop that was given to me by a friend. i still have the windows key on the old desktop, My question is : is it legal to install the windows xp on the laptop? both the old desktop and the the laptop were just given to me, i bought nothing but the cetificate of authenticite is still on the old pc . . Thank you.