I already have the 6200 & it's doing ok for frame rate UNTIL I enter a new area in the game world, then things grind to a halt as the HD runs like crazy. I do like the PCI-E idea though, but still would not want to put much money into a vid card.
Just did a quick look on pricewatch, there's a fanless PCI-E 256mb 6600 for $101 or a 6200 for $57. My signifigant other would be happy if I moved the AGP 6200 into her comp, it's just using a 32meg geforce400, so it wouldn't go to waste.
I had been looking at the dual core P4s, I'd heard if you don't try to go over 3.0G they don't have to run that hot.
The only thing I want for an optical drive is a DVD burner, most all of the time it will be sitting there doing nothing in any case.
My usual buying method is to see who has things cheapest at pricewatch.com, then see if they have a good rep at resellerratings.com.
I would like to keep this all around $600 total, but trying to get 2gig of ram will be hard at that I know. Already have my mouse, KB, Monitor, & Speakers, just need the computer.