You have a PCIe X16 slot so you can run any card just as long it is version 2.0 not 2.1
Other limiting factors would be what CPU you have installed and the size of your PSU. So if you post your full system specs it will help us help you.
cpu intel dua core 2.2 ghz
memory 1 gb ddr2
there is a vacant slot PCIe x 16