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.
If it works for you then don't fix it.