You can get access to your TV on your PC in different ways. The more simple and practical is to get a TV tuner for your PC and connect your antennae or cable line to it and that's it. The other way is to get Slingbox. It's a more complicated set-up but you can get TV on your PC without wires and you can have several PCs running the slingbox application.

The last way and probably cheaper than slingbox is to subscribe to free TV on PC services available on the net. You don't even have to have existing cable services for this. All you have to do is pay a one time charge, download the application and you can get access to different TV channels worldwide. With these services, you can watch television on PC and save on your cable bills. Of course, you need an internet access with high bandwidth allocation in order to stream these shows on your PC.