Sorry to ask such a simple question but I need to know how the Tivo actually connects into a system. From the Tivo web site it appears you connect you Video, Sat to the Tivo which then connects to the TV. Which is fine if that is correct. But I need a system that is girlfriend friendly. How do you watch the TV, if I am using the TV tuner how does the signal get to the Tivo? How does the Tvio know what I am watching?