Once a model has been built in cycles is there a way to convert it to render with Blender Internal?
Of course, you just have to make the materials in internal. Materials don’t transfer one engine to another.
thanks, good to know.
Just a note: I would always start building models in internal first. For modeling internal is easier to work with because you can make textures for displacements, bake normals, bake AO, etc. Once you have the stuff you want completed, then move to cycles for materials and rendering.