Originally Posted by Flux
iDeneb is your best bet. Beware of the continual restart problem. Having a license does NOT permit you to install Mac OsX, It can only be installed legally on MAC branded Hardware. Slapping a Apple sticker on the case doesn't cut it.
You need to find all out your chipset information and install the Kexts accordingly, or most of your stuff wont work or you will continual restarts/grey screens of death.
The only problem I see if finding the right Kext for your GPU, use NVdarwin kexts.
Actually you're wrong in my opinion. Technically, you're purchasing a copy of OS X. You're free to install that on any hardware you choose, as long as you purchased the copy of OS X. There's no statement saying it is only allowed to be installed on Apple hardware.
Half the stuff you're stating he does not need to do, as he has the most compatible board in the world for OS X. The only thing he will need to do is install a kext for the graphics card.
The rest is 99% working right away.
The point I am trying to make, is that you should purchase a copy of OS X if you plan on using it, because it's the right thing to do.