Go to your program folder then to the directx folder then setup. Run DxDiag. It's a microsoft utility that allows you to test sound/video It will query your vid card and tell you how much memory it has.
You will have to go into advanced settings in you display properties window, there it should have a tab that says displays, select TV Out and you should be fine. One note on TV Out, NVidia cards will not send a good signal to a TV, the text will be very blurry and you make experience other artifacts on the screen. Also, because the the card does not use Hdravision, you will have to keep your screen resolution to a max of 800 X 600.