I realize that alot of people have had many problems with the 8800GT and so I ask this question in mere speculation. Theoretically (given ample watts) would it be possible to have two 8800s installed with the ability to bootcamp Windows XP and use the pair as SLi cards? I don't really know much about this so here are my concerns: 1. Would the NVIDIA drivers for Windows XP be compatible with the Mac version of the 8800GT? 2. Would the motherboard in the Mac Pro be able to operate SLi given it is not designed to? 3. Are the PCI-E slots in the Mac Pro all 16x? 4. Would Forceware drivers recognize the multiple cards as being SLi compatible or would it simply use the other card for driving more displays?