Well, are you looking to play 3D games, program/surf, or 3d rendering?
If you want a card that will have good 2D and great 3D, then I would go for the ATI 9500 or the Nvidia Ti4400. Depending how you feel about either company, either one should be a good buy. 3D wise as of right now, the 9500 Pro would probably be even better.
If you are going to be programing, surffing the web, or just typing, and dont need to play games, then I would recommend the Matrox G550. It is cheap at only ~$100 off the web and has excellent 2D quality. Not very strong on the 3D but can do an occasional game or two.
If you are going to be doing 3d Rendering, then you need to up your pricetag and get a WildCat of some sort
Honestly, what are you going to do with it?