<p>Idad, </p>
<p>These days, you can almost never “recycle” Windows from a retired machine. Not with XP. Activation will kill you, and Microsoft will not be sympathetic. And many of them are coded during production to the machine they ship with.</p>
<p>So, to run Windows on a MAC, you’re going to need to buy the OS. The good news is that vendors like Newegg sell the OEM versions and make ordering pretty easy. But XP Home OEM will still set you back $90 plus whatever hardware you order in order to qualify for the OEM price.</p>