ASUS striker II formula freezing

I've got a new build on the table that's having problems freezing in multiple places (mostly in Vista installation and OS) . I've narrowed it down to the ASUS Striker II Formula Motherboard (BIOS Rev 1101) in the build. I've RMAed it once, and I get the same. Also, I tried another mobo/CPU with the build and it ran beautifully. The only thing I haven't tried is the CPU swap-out (Core 2 Quad Q9300) which I'm swapping for a Pentium 4 tonight just to make sure.

Here's the build:
EVGA 9800 GTX 512MB
OCZ 700W
mushkin 2GB DDR2 1066MHz
WD Raptor 150GB

I know the memory isn't on the ASUS QVL, which is why I figured I probably need custom voltages and/or timings on the RAM (RAM works by the way, tried it in another machine; also tried other RAM in the build to no avail). I've tried custom voltage and timings on the RAM running 800MHz, 2.1V, and 6-6-6-18. That didn't work, and I've read in another thread that increasing the NB voltage may help the situation. Any help would be greatly appreciated!!!

Stab in the dark
Might try increasing the FSB V by 0.1 inaddition to the (G)MCH. I had to increase both on by system for stability. Tried one then the other - Didn't hack it, mine need booth.

Added - You mentioned your board was a yr old, do you knwo if the Bios supports your proc.