Sorry, Newegg wasn't working.

http://www.newegg.com/product/product.asp?item=N82E16811133020

http://www.newegg.com/product/product.asp?item=N82E16813131146

http://www.newegg.com/product/product.asp?item=N82E16814121074 (2X)

http://www.newegg.com/product/product.asp?item=N82E16817153054

http://www.newegg.com/product/product.asp?item=N82E16819103866 (2X)

http://www.newegg.com/product/product.asp?item=N82E16820220228 (4X)

http://www.newegg.com/product/product.asp?item=N82E16822145164 (10X)

http://www.newegg.com/product/product.asp?item=N82E16823165013

http://www.newegg.com/product/product.asp?item=N82E16824236012

http://www.newegg.com/product/product.asp?item=N82E16827248005 (2X)

http://www.newegg.com/product/product.asp?item=N82E16829102016

http://www.newegg.com/product/product.asp?item=N82E16832116215

http://www.newegg.com/product/product.asp?item=N82E16833127218

http://www.newegg.com/product/product.asp?item=N82E16835114058 (2X)

http://www.newegg.com/product/product.asp?item=N82E16836116142

How good do you think this computer would be in gaming performance?

https://secure.newegg.com/NewVersion/WishList/MySavedWishDetail.asp?ID=4754714

It is basically 4 seperate cores on one die or chip and the combined processing power of the cores together is 4GHz.

This article should help.

http://icrontic.com/articles/quad_core

AMD Athlon 64 3800+ Processor 939 Socket

Gigabyte GA-K8NF-9.2.2 MOBO

HIS ATI X1650 PRO 512MB DDR2 800MHz

Antec Neo HE 550 Watt PSU

1GB Super-Talent DDR-400

1GB Kingston Value-RAM DDR-400

You should Download VLC Media Player. I plays all types of media files except Real media.

http://www.videolan.org/vlc/

Supreme Commander also depends a lot on the processor because of the massive amounts of units that are being controlled. That card should work as long as you have a good enough processor.

If you are really desperate for a driver you can download one from Realtek. It is not a very good one though, but at least it is one.

http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=14&PFid=23&Level=4&Conn=3&DownTypeID=3&GetDown=false

If you have XP installed first, then you should be able to simply install Vista an the other HDD by using the advanced options when setting up Vista. Vista comes with a OS selector thing so that when you boot up your computer it will ask you which OS you want to start. If you have Vista installed first, then I don't know

http://apcmag.com/5485/dualbooting_vista_and_xp (XP installed first)