text: can i use my xp home edition key, on xp pro?? i want to get get xp pro and i just wanna know if my xp home edition key/coa will work to validate the xp pro i install. my key and the xp pro i want to install are both 100% genuine. thanks! if you're xp pro is 100% genuine, then you shouldn't need your xp home key anyways--your copy of xp pro should've come with key if it truly is genuine.