OK, I am a man of few words. Kind of a 'just do it' fellow so I'll just post a few pics of what I built last night as my way of trying to give a little back to this forum.
I wanted a light weight, very sturdy curved frame to mount my screen onto so I bought a couple of very good quality 1x8 pine boards for the top and bottom and several cedar boards for bracing. My wife had me cut up a lot of the cedar I bought for projects so I ended up using what cedar I had left for the four center braces and had to find scrap pine 1xs for the remaining vertical pieces. The screen will sit on each corner and span 8' so I wanted it to be rigid. I braced each corner and where ever the cross braces joined with metal mending pieces.
The whole thing is light because I had to man handle it all by myself. The curved frame is 128" wide by 52" tall with a 40' radius.
I wrapped the whole thing in black velvet so no reflections can be seen thru the screen.
Laid the frame on the floor, took down the screen and laid it down onto it. simply screwed it down to the subframe.
Set frame and new screen up and cased with velvet covered door casing. Still need to stretch out a few wrinkles but watched a little 'Fringe' on it last night and didn't really notice wrinkles.
It is a kind of subtle thing. I don't think most people are going to walk in and say "OMG, that screen is curved!!!". I think its going to be more like "hey, is that screen curved?"
I like it.