I have been looking through the front projector theater galleries and sizing up my room for a screen. The projectors I have been looking at are 4:3 1024*768 projectors.I would like to go with a width of 8'but the 6' height would mean the screen would almost touch the stage and ceiling leaving little room for the center channel. A 16:9 screen at 8' by 4.5' would fit in better. My question is, in the setting of say a Benq pb2220 there is a setting for 16:9, does this mean that when set to this a tv show or movie set at aspect ratio 4:3 will have the gray set bars or be stretched or would it display it at the original 4:3 image size 8' by 6'? There is no home theater store nearby to ask the sales people or demo so I thought I ask here.