Im gonna attempt to build my own projector screen but I have a few questions. Im probably gonna go for the panny ae900. Im using the projection calculator on projector central and the projector is gonna be about 14 foot from the screen. So I set the throw disatnce to 14 foot and it gives a sceen size of 70 inch diagnol, 61 inches wide and a height of 34 inches. But what exactly does this mean? Is this the optimum screen size for that throw distance? Is that the size I should build the screen. I was hoping to have a bigger screen then that. Could anyone shed some light on this or even point me in the direction of somewhere that explains the ins and outs of projector screens (Iv already had a look to no avail). Thanks.