I need a new PSU so that I can upgrade my graphics to a 6600GT AGP. I have a p4 2.4c, 2x512MB pc3200 ram, 1 hd, 2 cd drives and a disk drive, and a card reader. I'd like to get a budget psu that will keep this system stable for a long time. I'm not too worried about future-proffing though, as...