Constant frame-sync display & stereo vision

I'm trying to enable stereo-vision inside TGEA 1.8.1 but I have some difficulties linked to the fact that the stereoscopic device is a LCD VR-headmount system. This system basically will put one odd-frame to one eye, and one even-frame to another eye.

I was then looking how to use the STEREO render target; but it looks like it is not supported on DX; and neither on OpenGL (even if it is possible to have a PFD_STEREO pixel format, OpenGL told me no support for Stereo).

Indeed, due to the hardware device, I must implement a kind of stereo flipping mechanism for the back-front buffer. I was looking at the StereoBLT API SDK from NVidia, but unable to find a place where to download it...

So here are my questions:
1. Does someone has the StereoBLT SDK from NVidia?
2. In your opinion what is the best way to have a frame-sync update of the framebuffer so I'm sure the odd & even frame have always the correct frame (not mixed) even when the frame-rate is down?
3. What about having a thread which will mimick a FlipStereo functions (running for example at 2xtimes the refresh rate) which will make sure each odd-even frame have the correct render target (left/right)?
4. Did someone already tried to work on it? (I saw some remaining trace in the TGEA 1.8.1 code for the OpenGL driver...)

Thanks for the support.