Can I make the NVidia Stereo Utility send the sync signal to my soundcard ? Recently someone gave me a pair of VR-100 shutter glasses (ASUS) Unfortunally I don''t have the appropiate card. I tried to connect these glasses to my soundcard, since they have a mini-stereo-jack. I made a 400Hz square wave and it works ! First I render the left frame with DelphiX, then I pan the sound to the right. Then I render the right frame and pan the sound vice versa. It works best if I put the volume down and up every cycle. I found the NVidia Stereo Tool and WinX3D, which automatically force DirectX into stereo page-flipping mode. I understand the tools use the VSync of SVGA. Would there be *ANY* way to make the soundcard pan left/right on the VSync signal ? Any hint or information is welcome, I don''t need to solve this problem this week, I''ve got time on my side. Thanx DelphiX