I have a 9800 pro and when you connect the wire in the back it has both a video out and a video in... how do I see what is coming in the video in... what software do I use... I tried searching for answers and only got stuff about the version of the card with the tv tuner... my card doesn't have a tv tuner... I just want to plug in any source (say a cable box) into the S-Video input and then see what's coming in it on my screen. What do I do?