Where can I get a compatible graphics card for my PC?

[rossfedder]

I don't know much about graphics cards. I have checked my mother board's manual but can't find anything. Is there any online testing way to know which graphics card is compatible?

[jeffpn]

The first thing you need to know is what kind of slot you have. Is it AGP, PCI-e, or something else? Take the exact model name of your computer to your local computer store, along with the list of RF's system requirements. They'll help you.