I opened it tried to install it on my current box to find out that my motherboard won't support it so I put my OEM XP copy back on it. My question is this. do you guys think I could resell the Retail license of full vista ultimate and get at least half back or more or should i just keep it and save it when I do build a machine? Because right now I think the Vista ultimate OEM licenses are what 185 or so? That is probably what I'l get when I build a box unless I just keep this retail license.