Hello, I am a long time user of Direct TV with TIVO. I reciently talked my brother into getting TIVO. Today however, I learned that Direct TV and Tivo have parted ways. It looks like he will have to go with Direct DVR instead of tivo. Can anyone tell me how much difference I will see between the format of the TIVO and Direct DVR. Are the similar enough in operation and appearance that I can help him navigate over the phone.