Also please check the Tips&Tricks Forum, you might find a fix for your problem.
I had winXP and used Chris TV lite to display composite in via FlyDuo TV card. It was working and displayed normally.
Now I switched to Windows 8, downloaded latest Chris TV Lite version and it now doesn't display video. Only grey screen and nothing.
I have tried to change all Video Setting; to Overlay/EVR/VMR9 and still can't get the video. I had also added DFilter.
According the program the input signal is detected and when I remove composite in signal, it says no signal.
So I suppose there is some problem to display it on the screen of my laptop.