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How many amps do you have on the 12v rails of your power supply?
It has Single power supply (490W), and one power cable for a SATA device left. I am currently investigating the option of installing a PCI Express X8 to X16 Adapter from Orbit Micro. have a look at http://www.orbitmicro.com/global/express-adapter-p-755.html
I have requested a list of VGA cards that will be supported, anything will be better than the current "Integrated ATI® ES1000 VGA Controller with 32MB memory"
I will look and see if a 9600 that does not require additional power will work in this adapter, halve speed will also do as I need to drive a 26" Dell LCD Monitor.