I am looking at getting a D3, Couple questions as it will be the first Nav system I've had. I read that you can't have the Nav disc in and listen to a CD, or watch a DVD, Correct? So if I head from here (Kansas) to Oregon, Can I set a destination, and then watch DVDs all the way there? Well the kids will watch, I will drive!! How does this POI work? type in Burger King, and it will tell me where the nearest one is? And that is part of the Nav DVD or that cost extra? Like a subscription like the Sirius? I am really leaning towards this unit, and wanting to order today, just