Mac, are you saying rounded or bowl? And I assume it's a A shape?

Gypsy is right as well as some of the tips from Frets.Com Stew-Mac has some good stuff and they're about 40 miles from me.

If you have all the pieces and they're intact, you may still need to add a bit somewhere. You will probably end up making a mold or frame of sorts of the back and then gluing the back together on it and then replacing it on the body after adding the braces. This will probably also mean a bit of a change in the binding pattern or the addition of some purfling. Got a few more details?

Spaw