hwg

So... I've read a couple of the other posts regarding 64-bit Vista, and I am now incredibly frustrated. Varying BSOD's have occurred, usually during some intensive process ( or non-intensive in some cases, like browsing the internet ). I am getting fed up with it, and the fact I bought eight gigs of RAM more than merits the reason I should be using 64-bit... I do not want to go back to 32-bit, but it's definitely one of the options that are on the table.

My current rig is as follows...

PSU: PC Power & Cooling 860W
MOBO: DFI LT X48-T2R
CPU: Intel E8400 OC'd to 4.0 GHz
GPU: nVidia 8800 Ultra 768mb
SFX: Razer Barracuda AC-1
RAM: 8192 MB of DDR2 ( G.Skill )
HDD: 2x Western Digital Caviar 750 Gb in RAID 0
OS: Windows Vista 64-bit

I'm at the end of my thread here guys, I need help ASAP.

What all do I need to include for this to be solved / diagnosed?

Additionally, I have run every CPU and RAM test I have been able to find, they've run for hours with zero errors... but suddenly I start actually using my PC - and it will BSOD without warning.

Thanks,
Dave