Are you sure you don't have an AGP slot in there? In my opinion, an AGP capable video card is better than a video card running in PCI. It provides higher bandwidth, more data transfer per clock and in turn, result in smoother graphics.
Oh never mind. Your motherboard ONLY has a PCI slots. It is preferably to play that game with DirectX 9 capability to get better results which means you'll probably end up upgrading your video card to something like:
CHAINTECH Geforce FX5200 256MB 128-bit DDR PCI Video Card
It's a great performer for non-AGP systems. I like Chaintech video cards as I use to own several of them.