You should be able to play any game out there with your set-up, perhaps it needs a little touch-up tune job.
However, in order to make an upgrade that can be noticed, I would go with the GeForce 2 MX or GeForce 256 DDR. Check out Sunway Graphics 3D company at <A HREF="http://www.sg3d.com" target="_new">http://www.sg3d.com</A>. They have some of the best prices around and are HIGHLY rated at <A HREF="http://www.resellerratings.com" target="_new">http://www.resellerratings.com</A>. This is a good idea to check out always before ordering, you can read the posts by previous customers, some of which are really scary with the fly by night outfits that are usually the ones with the low price.
Leadtek are a good company and so is ASUS and I have had good luck with Guillemot (who DO send the rebate checks). Good Luck, Take-Out
The early bird gets the worm. The early worm gets the bird.