Thanx for great responses guys!
Zoolander, I follow what you're saying (for the most part, anyway) but that'll have to be more of a last resort, since there are far too many other possibilities to eliminate, not the least of which is an iffy mobo
-Do most HDD/Optical drives/etc use the 5v line? hmm didn't know that...
-Which benchmark/intense stress prog do you guys recommend. I've heard of something called folding@home or something, but never used it
-Quick question, for those of you familiar with strained PSUs, would a system typically freeze (in my case), or simply reboot? If its the latter, then it might not be my PSU
ECUPirate, if you read this, could you possibly tell me about your AGP voltage mod fix? I'm not sure what your problem was, so I don't know if it would help me