ultralight, looks good though i have a few suggestions. make sure you go ahead and get the SATA II drive. you'll be happy you did in the long run. this will cut your operating and load times in half. it's probably just a few more dollars. newegg has them under 100 for the 200G size. i would recommend reading this whole forum just because of the hardware you have listed. i think i remember reading about a prob with a certain antec power supply and i know someone had a prob with the x800 gto a couple pages back BUT he could've gotten a bad card or pcix slot. i'm an nvidia guy, so me personally wouldn't choose an ATI card. try your price ranges for video cards on newegg to see what you come up with. you might want to look at the 6800 GT or GS, as the 6600 GT is becoming low end, but still good. as for the cpu fan, you'll be perfectly fine with the stock one as long as your case has decent cooling. i wish i had your RAM, heard it was good.