You should be able to start 3D gaming now if you have an Nvidia card and a pair of red/blue glasses lying around (they should be extrememly cheap if you need to buy some). While 3D Vision (which uses 120Hz monitor + Nvidia's shutter glasses) is the more popular choice, nvidia drivers support an anagylph mode where it renders 2 images in 2 different color ranges, and 1 eye (with the red/blue glasses on) only sees one of the color ranges and the other eye the other color range--so same concept as 3d vision. Major drawback is that the colors get dulled in the process. Also 3D vision with the shutter glasses might give you more depth...I don't know.
Still, I was impressed with how Left 4 Dead 2 looked in anaglyph mode. Everything has way more depth, and not just in the foreground. I tried Crysis 2 and there's not as much depth in the background.
<Antec 900 Black Steel ATX Mid Tower Case>
<EVGA nForce 680i SLI ATX Intel Motherboard>
<Core 2 Duo E6600 @ 3.2GHz
<Evga 8800 GTX @ 630/1050
<OCZ Flex XLC 2GB DDR2 800>
<Samsung 500GB 7200 RPM Sata Hard drive>
3DMark06 score: 12243
Windows Vista Ultimate
Avid gamer, dedicated student (most of the time).