ok man that looks like a great system..but look at the reviews on the mobo...not looking too good...now the board u are looking at is nforce4 sli....now later if u do sli u will only have 2x pci 8x slots which make instead for around 150 u could have this
which gives u 2x pci 16x slots which run much faster and have higher bandwidths when doing sli...also it has no reviews but with eVGA u cant go wrong
ok now with the video card...i think that for around that price u could have something better...look at this
for the same price u could be having a 7900gtx with a 650mhz core clock instead of 490...a 1600mhz mem clock instead of a 1300mhz....and 512mb instead of 256....now that is your dicider here....get the eVGA 7900gtx because it is the same price but far far far better....
now if u just want a sound card so that u can add some more fps and take a load off of ur mobo get something like this
creative labs (great company) has all the stuff u need and around 30 dollars...great deal...u really wont need a 200 dollar video card unless u want the best sound u can get....
so ur new list would be this
Revisions in Red
Case: Aspire X-Navigator
Processor: AMD Athlon 64 X2 3800+
Motherboard: eVGA 123-K8-NF47-AX Socket 939 NVIDIA nForce4 SLI X16 ATX AMD
Power Supply: Enermax Noisetaker 600 Watt
Video Card: Nvidia Geforce 7900 GTX
RAM: Corsair XMS 2 Gigs
Hard Drive: Western Digital Caviar 320 Gigs
Optical Drive: ??? Looking for a nice, cheap, easy-to-install combo drive that I can use for burning DVD, CD's, and playing DVD/CD games.
Speakers: Logitech X-230 2.1 Speaker
Sound Card: Creative Labs Sound Blaster
OS: Windows XP Home Edition W/ SP2
Total:$1700+ now that is a lot but tell me if it is too much and i will find you some cheaper stuff
now with that you have a much better system and games will be GREAT!!!
hope this helped