I have just purchased my first projector(mitsubishi hd1000u), and I would like to know of some way of making a great home-made screen or if I should just spend the money for one. The screen will probably be around 120". Is that too big of a screen for this projector? I would like to build my own, if there is some way of getting the same quality of a bought screen. Please offer advice. Also: Should I "calibrate" my projector? What is some tips on setting up a 7.1 surrond sound system in a 30'X30' room? Is there anywhere to get a 100'+ phone chord?