Use ATI video card together with Tesla

I remember read this here. Because the XP only support one video card driver at the same time, I can’t use ATI video card together with Nvidia Telsa, right? Right now I have a ATI pci card at my hand, but if it is impossible, then I don’t bother to test it.
So it HAD to be a nvidia card? any nvidia card? I suppose it have to be supported by the tesla driver, right?

When you download the drivers and SDK, the readme lists ALL the cards that are supported.

ATI cards are not on that list and neither are ALL the nVidia cards.