Can someone please explain the difference between 1080 and 720. I have a Sony D50HRT projector and I am interested in investing in a JVC d- theater video. I called on of the suppliers over in the UK who told me the D50 is only capable of 1080 and I would really need a 9inch tubed projector capable of 720. I must admit to complete and utter confusion. Anyone out there able to clear things up?