The term, sat TV on PC, refers to software that allows you to access cable or satellite television from your laptop or any other computer. Once installed, television signals are received through the internet to the computer. Doing this is not illegal because the majority of the channels accessed are free. The purchase of the software is the only cost involved. I will also be discussing a top quality satellite TV to PC software that I am using to watch more than 3,500 HD Channels worldwide for free.