From what I can see, that mobo only has slots for AGP and PCI cards. (not PCI Express). This really restricts the number of cards available.
Veiw the links above. These are the only cards that will fit your mobo.
If I was you, I would invest in a new mobo, with PCI Express slots. This will give you access to LOADS more graphics cards, which are much better than the AGP + PCI cards. Save up a bit and get a new board and a PCI Express card.
Oh, what do you use the PC for? Gaming?