I use a Hauppage TV card in my computer and remembered a few months ago that there was talk of Linux users being able to use VLC for their TV card.
Well, doing a bit more digging tonight, I found that the Windows version 0.7.0 now supports TV cards.
Just choose Open, then go to the DirectShow Input tab.
Click refresh next to Video Device.
Choose your card from the list(might be named something like '*DEVICENAME* Capture'
Click OK, and watch TV in VLC
*NOTE: There is not yet a way to choose a channel, that I can find, so it uses the last active channel used in your TV app.
Aqua-Soft Forums