A little more detail...I run the enabler, then the driver...and when it tries to boot:

It goes to the gray apple loading screen, freezes for a few moments...then black...then a blue background...then a black background w/ mouse....nothing after this....

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EVGA x58 SLI
i7 920 @ 3.8GHz
CoolerMaster V8
OCZ Reaper/XMP 9GB Combo (8-8-8-24)
EVGA GTX 260 SC
EVGA GTS 250 (dedicated physX)
WD Caviar 500GB x2
Windows 7 64-bit PRO (MSDNAA)
Rosewill 750watt