Unfortunately the nVidia 8 series is not yet supported by the stereoscopic drivers, but older cards should be fine. I recently bought 3D glasses from eDimensional, which work by alternating the image on the screen for left and right eyes, while simultaneously blacking out the relevant side of the glasses. They are interesting, but a pain to set up and a bit of a strain on the eyes. Oh, and they stopped working after a day. Other than that, they're great, though.