I have MCE 2002 with NVIDIA PureVideo installed (TV Tuner Card - WinTV-PVR-150 MCE). When I try play any DVD, I just get a blank screen. When see the same if i try to view the DVD in WMP. I thought NVIDIA PureVideo Decoder is a DVD Decoder it will take care of playing the DVDs but seems like i am missing something. Can someone help?

Thanks