I just installed a new MSI K9A2GM-FIH mobo in my 'new' PC. Well, I guess the only things not 'new' are the CPU and CD-DVD/RW. The ASUS M2N SLI-Deluxe mobo just couldn't resist BSOD'ing every now and then. Oddly enough, I swapped mobo's and fired it up - Windows booted, griped about finding new hardware, asked for a reboot, then told me I'd need to re-install a couple of things. I did, and it's running fine right now. Interesting.

Here's hoping it hasn't been the CPU this whole time. Although, if it was the CPU this whole time - I could probably get away with building another machine out of all the new troubleshooting parts I now have.