AutoCAD 2010 :: Flattening Solid Objects?

I am working on a design project for a class i am in, i need to make a model of the design solution i come up with. since my design has curved walls, how to take my AutoCad model and convert the faces to something where i could print them out on paper and make the model. I need to basically unroll them as if i was flattening them on a sheet of paper. i have tried flatshot and flatten, my difficulty with these is that it does not take the entire object length along the curve, it will only take the distance that can be seen on the screen. I know this is possible with 3ds max as a friend of mine did it that way, but i don't know how to use 3ds max so that doesnt work for me.