Yeah i ran pretty much that exact system build there for a long time as my main box. The only differences were the case, which i had a cheaper one, the power supply, i was running a 480 not 585, and my processor was the 3800+ not the 4400. Other than that everything is the same, including the parts themselves. Same brands, manufacturers etc. It wasa very reliabale system and ran everything i threw at it. Oh and those FPS numbers I gave were when i was running Vista Ultimate at full settings as well so on XP you will get much better performance, but no DX10.

And as I said its got plenty of expandability, enough power for a 9600gt if you decide to upgrade, and extra slots for ram and you can add cooling and anything else you can think of. You can upgrade to dvd burners if you want and youve got an open ide slot to add another hard drive or two. The audio on the MB is phenomenal, no need for a fancy sound card. And with the hard drive being SATA you'll get much better load times when zoning. The only issue i had with the MB was when i upgraded the Video to my 9600gt, getting the 8600gt out of the board was extremely frustrating as the locking mechanism on the PCIe slot is very small and it sits under the end of the car, so it kills your fingers trying to press it down and do so without hurting your MB. But other than that no problems whatsoever. I hope this has helped.