I cannot see any video from my newly purchased Dell computer. It has Windows Vista Ultimate on it. I have 3 outlets on my tv tuner card. One says antenna, one is s-video, one is tv-in. I am connecting the cable tv wire in the outlet that says 'tv-in'. I have tried optimizing settings on the media center. It never plays any video or doesn't show the cable tv channels. I don't know how to configure it. Tried all possible steps that I can, but its not playing any channels. When I plug in the same cable tv wire in my television sets, they play it fine. Infact , there is a 3-way splitter I have at my place connecting 3 television sets. I tried all 3 cables, none of them are working in new dell pc. Do u know How to configure that on my computer so that I can watch tv on the computer. Thanks.