*Most* CRT monitors can not handle the high refresh rate, the refresh rates need to be at 96hz to have an acceptable stereo image. We did 99% of stereo image with large DLP or CRT projectors, manufactured by Christie Digital and or BARCO. You can build lower priced systems using what is called passive stereo using any of the NVIDIA quadro series video cards. Passive stereo utilizes one projector polarized for each eye aligned on top of one another. The video card would then send the right eye and left eye signal through each channel of the video card. At the time, SGI(Serious $) was the big computing power behind stereo imagery, but now high end video cards with DVI output are getting some serious play in the industry when one or more workstations are clustered together. Our mainstay pc video card was from NVIDIA in the Quadro series put into a BOXX workstation(Built specically for clustering). It is unbelievable until you really "see" what this imagery looks like. If the display is designed properly, you would feel like your graphics are floating in space and your in the middle of it. Today, Los Almos National Labs has the highest resolution system ever built sitting at 43million pixels. Thats 33 tiled stereoscopic projectors running 1280 x 1024. Yeah, you guessed it, they build a better bomb.