Anything you can pick up on your TV you should be able to pick up on the computer, with the coaxial cable plugged into it the same as for the telly.

Mind, you need the right kind of program to tell the computer how to do all that, but that should have come on a CDRom with the TV card. (Mind they always seem to need all kind of fiddling about, and getting on to the company's helpine and they send you stuff to sort out the bugs...)

I'm on a cable system - if anyone knows ways of things I could do that would mean I would get extra channels over and above the ones I am renting, do let us know. So that I can avoid accidentally doing those things, of course...