First of all, learn a bit about what you're talking about.
Stereoscopic 3D is basic red/blue 3d. It renders two images, one in blue-ish green, the other in red. When combined with a pair of blue and red 3d glasses, it gives the appearance of basic 3d. This can be done on pretty much any monitor or television, that is 60hz.
IF you have a 3DTV/Monitor that's capable of a 120hz rr, than you should be able to render improved stereoscopic 3d. HOWEVER you also need shutter glasses, which aren't red/blue, and read the signals as if you had two 60hz monitors, each displaying a full render, one in red, one in blue.
It sounds to me like you have the 3d TV covered, but you'll still need the shutter glasses. I don't know if it's possible for 120hz basic stereoscopic 3d.
Let me try and make a chart:
You need the special shutter glasses to see each picture @60hz in 3d. Otherwise, grab yourself some red/blue glasses, press Ctrl+T in game, watch the picture turn red/blue, put the glasses on, and you'll get basic stereoscopic 3d.