Watch satellite tv online free

We all know that there is something like satellite TV and is it possible to watch that satellite TV in my computer online for free. Is this mandatory to download some software to watch the satellite TV with thousands of world channel. Do any body know such program or software whch will help me to download online PC TV software free of cost or cpeap

If you do not know the answer then why you waste your as well as other's time here. Take it easy. Thanks for atleast replying.

Yes, it is mandatory to download the software. I know that program and tried it. It works good for me. I get it in this website http://www.watch-satellite.com. It will not work on Mac computers. And its only one time pay off. Or try some stuff that you trusted most. :D