[premio]

If you don't have the ViiV logo on it... then yes, it is not a ViiV PC.
As far as I know, the ViiV software components, will not run on a non-ViiV system.

ViiV's technical details are horrible, I think on purpose to force you to buy an expensive box. You can buy a ViiV motherboard/CPU combo in a build your own scenerio. It is essentially the same thing as when AMD branded 3dNow and Intel MMX to boost performance. There is a hardware component that is needed for the software to make the appropriate calls.