Remember Psystar? Yeah, those selling PC systems compatible with Mac OS X that they call "Open Systems". They're currently in a long run of a legal suite against Apple. But they're continuing to sell their stuff as the trial moves on in court; the latest offering being what we know as "Rebel EFI". You can download Rebel EFI which promises to make installing Mac OS X on any PC and as easily as it's done on real Macs. But to get the most out of it, you gotta shell out $50; it'll take out the 2-hour usage limit the company has locked Rebel EFI in. It says:
**Must have purchased authentication code to permanently install**