What driver should I be using?

I have a Radeon 32 meg ddr card and was wondering which driver that I should be running for it? I have a Soyo 7VCA mobo with an 800 Celoron cpu on it. I am not real impressed with the way that this card runs in some games. Like Diablo 2 LOD, it runs like crap. Would a better driver help, or what settings would help it in that game. I know that the fps are way down when running that game also. Thanks for any suggestions, and links to any drivers would be appreciated. Also I am getting around 3200 in 3DMark 2001. Is that low for this card?