I was gonna try the newest Nvidia drivers that I've read support stereo 3D and has a "try" feature for use with anaglyph glasses but was disappointed that it requires Vista for that option. iZ3D drivers do work with XP however and the anaglyph output driver is free so everyone with 3d color glasses should give it a try. iZ3D worked great with my VR920 and it's 3D parameters can be set in real time.
I read in an Amazon review of the ED shutterglasses that the iZ3D driver works with it and has better game support than the ED driver but you have to download a file from the iZ3D site; a "manual activator" intended for "testing" to manually activate the glasses and use pageflip mode to play games with iZ3D. I don't have PC shutter glasses so I don't can't really confirm this. I do however have shutter glasses with a VFX 3D Converter for my CRT TV which works great for 3d movies, fair for real time 3d conversion of TV, and good for 3d conversion of console games though all I got's a Dreamcast to play Re-Volt and Rez.
Here's a recording of 3D game play in NSR JUMP IT UP using the iZ3D anaglyph driver set for red/cyan glasses:
http://www.youtube.com/watch?v=9oh1eLO5Luw (3d viewing requires red/blue anaglyph glasses)
iZ3D currently doesn't work with fraps for me so I recorded the tv-out of my video card which is a poor signal but at least it worked.