", I'm pretty sure stereo glasses support was dropped a good few driver revisions ago..."
not so, nvidia still strongly supported the stereo drivers right up until vista popped out and made them redivert driver dev staff.
The stereo drivers on nvidia's site work right up to the 7950, even in sli. the 8000 series doesn't support stereo and as far as i am aware it is only for xp and linux.
[edit]but as soon as vista is sorted i'm pretty sure they weill be back to working on tjen for the 8000 series and vista[/edit]
there's 3/4 main 3d display methods just now, and nvidia supports all of them:
anaglyph (red/cyan colour split, you need the red/cyan glasses to view this)
lcd shutter glasses, these are what i think you have, they basically render alternate frames (or lines but this only works with crt displays) and shut off each eye in sync with the display.
polarised display, where the display is actually 2 displays, polarised at 90 degrees to each other and you were glasses with polarised lenses, (works a bit like the shutter glasses but better because there is no flicker)
there is also a system which works like those funny cards you get in cereal packets that show 2 different pictures depending on the angle, a filter is fitted to the screen that makes alternate columes/lines only viewable from angles off centre to the left / right (alternating) so when you are directly in front each eye sees it's own version of the screen. a bit like the polarising glasses without glasses.
imho the polarised version is the best because it works from all angles, has no colour distortion when configured right, and has the full resolution.
i'm a cheapskate so the anaglyph method is my option, at £5 for 5 on ebay it's worth it even just to try if you have an nvidia card.
ati on the other hand has no stereo support without 3rd party stereo drivers.
AMD athlon 64 3000+, 1GB ddr400, 720GB total hdd, ati radeon X1900gt 256mb (pci-e) 17" tft(@1280x1024).