I've got a problem with my photogrammetry PC-station. I've installed a FX 1300 graphics card from nvidia with the newest driver (77.x). In den nvidia demo-mode the stereoscreen (Z-screen) works well. Trying to use it with my photogrammetry software systems(SOCET SET and LPS) it doesn't work. The software is asking for OpenGL Stereo Quad Buffer API Support. I've found this topic in different forums. They all say, that I should turn the "Stereo Quad Buffer API support" in the openGL settings (within the enhanced settings for the graphic card), but i can't find any word about OpenGL there. Could you help me? Thanks in advance.