What is the make and model of the dvd. The video card maybe a video/decoder card and will not work with the viper card. If it was a just a decoder card, your video would come out the video card and filter thru the decoder card. does the nitro have what looks like two monitor ports. I think the nitro was made by STB and is in itself decoder/video card. To use the viper card you will have to get a plain decoder card (faster) or use software decoding (slower and need a 300mHz processor or higher). If you are running win98, it may have the drivers you need on it. I am supprised that the manufacturer could not supply you with the drivers for the dvd. I will wait for you response before going any further.

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[This message has been edited by kmondrush (edited June 02, 1999).]