Geforce2 GTS-V for $50 bucks has the best price/performance ratio and can be bought at Newegg.com . The Radeon 7500VE is also a good choice. It has more features for only $30 more. I think the following review sums up the current range of cards under $100 nicely.
http://www.hardwarepub.com/reviews/budgetativsnvidia/index.shtml
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Sorry I just reread your post, the Geforce2 GTS-V only has 32mb of ram. A card with 64mb of ram, I'd say the Radeon 7500oem($80+) or a Geforce2 TI. There are a lot of Ti cards to choose from. I agree with the above post, the Gainward Geforce2 Ti from newegg.com is a good choice.
The Geforce2 TI is better for raw gaming power, the 7500 will give you better 2d and better DVD playback quality and its gaming power is only marginally less.