Brief history: I ordered two of the new Evo Projectors. One as a Christmas gift for my family (Parents and two younger brothers) and one for my apartment with my girlfriend. As a result, I needed to make two screens, one here in NJ and one in MO (at my apartment). I had some time over Thanksgiving so I gave it a shot.

73" x 56" (Outer dimensions of the wood)
4:3 ratio screen

Materials:
24' of 1x3 maple lumber (Home Depot)
x4 'L braces' (Home Depot)
Black Felt (JoAnne's Fabrics)
Blackout Cloth (JoAnne's Fabrics)

I bought enough Felt, L braces and Blackout Cloth for the second screen so that when I go back to MO I can build an identical screen and I will take pictures of the construction, but for now, this is the final product of the first screen...