Just like with digital cable you have to have a special reciever.
So you are out of look, you can always go through your satellite box and split the coax cable coming out. One to your TV, and one to your monitor, you will be able to watch tv on your computer and record, but you will have to use the dish reciever to control the channels
I have DISH network and I hook my receiver up to the RCA inputs on my HD wonder, which has the same adaptor as alot of the AIW cards, but you will have to use your dish remote to change the channels like mentioned above.