I've read this through several times and I must admit I am lost as well. When you've lost an Aussie, and a Yank, maybe there's a problem in translation, of either language or basic terms. Carrara is an all around 3D modeling, rendering and animation program, but I do not know of a way of "assembling" photographs in it other than assigning them as textures to 2D planes. Perhaps a little more explanation of what you wish to achieve would be in order, so we can help you, or at least steer you towards another app that could accomplish what you wish.