http://www.iz3d.com/t-dcdriver.aspx
to clarify
this works with nvidia
this works with ATI
this does not replace your graphics driver
this installs an app that you can choose to run or not
when running it post processes after the graphics card and creates the 3D effect
there is no drop in FPS or res or detail level
it works like magic
there are two negatives, colors are reduced and aiming is slightly off
but for free its worth a go !!! try it !