Zattoo is a program for watching television in your PC without installing any additional component.
Zattoo needs an internet conection to watch the channels. Depends on the country you are is the availability of channels. If you are in Spain you will be able to see the following channels: La Primera, la 2, Antena 3, Cuatro, Tele5, La Sexta, TeleDeporte and some more.You need to register in the Zatoo web, and the program will ask you for a login and password
Once you get in the program the only thing to do is change the channels to watch you favourite TV programme.
The Zattoo is a simple way of watching television with no additional component installed to the PC neither antennae or cables in the room