Hello, if you want to "output" just the video signal and not the usual "windows desktop", you should use a RealMagic Hollywood DVD Plus PCI board, but
1) you can find it only through Ebay
2) it works just with MPEG video files (as it's the video format of DVDs at the beginning).
In this way you can play lasershows linked/syncronized to video.
Note: another thing, you will not have any preview. Pangolin will show a blanked/black frame, but it works. You can connect then the video-board S-Video out directly to video projector. The signal will be out perfect, just the video-signal.
Better then if you use DVD format like 720x576px frame size.
Hope this can help.
"laserzag"
Giuseppe Zagaria