I run on a 300a oc'd to 450, 128MB of RAM with a CL TNT (oc'd to 115/115) and I also use A3D 2.0. To pick the OGL renderer just
select use other or something like that and you should get another list. You could always go to the advanced options and select it in the drivers section. I also run with Corona, Volumetric Lighting, and Detail Texture's off. I run High Detail World textures and Medium detail skin texture's.
For reference running in 640x480x16bit I get about 39-42fps average.
This actually beats my Win95 DirectX7/Direct3D score of 33-35fps at the same settings, and the A3D Win9x driver is supposed to be better (it does sound better)
I really don't know what happened to the *huge* Direct3D performance gains, but I'll play in NT over 95 anyday.