I think your best bet is Geforce4 Ti 4200, but you may wait a bit until new generation of cards come out and the prices go down. Make sure you get Ti, not Mx.
Geforce3 can be modified into Quadro DCC with a softquadro utility that's part of rivatuner, that you can get on guru3d.com. It's a 3 or 4-stage process and it's less than obvious how to do it, there are limitations and technical dificulties. I wouldn't go with GF3 just because of that.