I am a total n00b on Freeview and was going to get a digital box to get Freevbiew but have some questions. 1. I just need the box right? I plug it in and tune the channels and thats it? Some people on here say they use aerials? I thought you dont need aerials with Freeview? I'm confused. 2. Do I get 16:9 and 5.1 sound? I will be getting one with optical audio input so i can use a optical lead to connect to my 5.1 system. This will work right? 3. Will I get a clear picture with it without the need for an aerial connected? I will be using my upstairs TV for it and it doesnt have a direct aerial to the outside connected like my downstairs TV but thats fine right?