I'm not at home right now but I'm pretty sure it's a 128MB ATI x600 card. I'll have to double-check later tonight. Thanks.
If that's what you have, you might be SOL. I just searched eBay and found no PCI cards for ATI. You can always sell your x600 on eBay and replace it with an Nvidia Quadro NVS 285 PCIEx16... might not be as fast for gaming, but is excellent for dual monitor trading.
might as well get this one. It is an 8xxx series card. You get better graphics with DX10. http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3048552&Sku=P450-8650
If you want a PCI ATI card you can get the ATI x1550 which is based off of the X1300. I just bought a 512MB Diamond Stealth x1550 PCI to go with the ATI 2400 HD PCIE that came with my computer. Works great. I believe the ATI x1550 also comes in a low profile version.
Maybe OP is NOT SOL... My prior search didn't show any ATI PCI's... when I searched for ATI x1550, there was one for $60, including shipping. Still might be better to sell his x600. He could get about $30 for it. That's enough for a NVS 285.
Microsoft has made it very difficult to get rid of vista entirely and install XP. However there is a way. My computer genius technician worked all night but finally figured out how to do it. If any of you want to wipe vista (by the way, it's not a simple matter of reformatting the hard drive by the usual means, as you would think) PM me and i will check with my computer guy and let you know the "trick". P.S. Vista sucks big time!
Wonder if KillDisk would wipe the harddrive and get rid of vista - I have used killdisk to wipe out "other virus's".
You might want to try this, too... http://hddguru.com/content/en/software/2006.04.12-HDD-Low-Level-Format-Tool/