Sorry to disappoint, but at first glance it would seem that your motherboard doesn't support PCI  Express cards, which is what the ATI Radeon X1300 Pro apparently is.

You've really got two options...either get a new motherboard that handles PCI Express graphics cards, or look for a decent AGPx8 card that will integrate with your current motherboard like a GeForce 6200 maybe?

However, all that said, you also should make sure that the problem really is with your graphics card.

The liver is evil - It must be punished.