Best tried/review of video cards for CAD

Hi – I’m looking to upgrade my AGP video card for some work I am doing on Autocad (2000). At present I have a Hercules Prophet Ultra II (64 mb) but many of the drawings are taking minutes to appear. Obviously I am looking for 128 or 256mb but does anyone know of a good one they have used for CAD work? Or if anyone knows of an independent review of Graphic cards that would be helpful too.
– Many thanks