Actually the scaling part is pretty easy. Depending on whether or not the model has been compiled you only need 1 or 2 tools to do it. The first tool is one I wrote in vb2008, so you need the dot net framework 3.5 to run it. The tool is available on the vault and is called Scale'Em All and is one of my silly little utilities. The only fly in the ointment is that it requires the model to be uncompiled i.e. in ascii format. Which is why you may need the second tool - a model compiler/decompiler to decompile it before you can use my tool. My tool only affects the vertices of the model, expanding (or shrinking) it outwards from its centre. This does mean you may have to manually edit the model's position Z coordinate to get it to look right. Just look in the model for the line marked position. The coordinates for the position are in the order X, Y, Z, so you only need to change the last one. These instructions assume that it is a simple model made up of a single set of vertices. There are some models that consist of 2 or more parts, each with their own position line in the model. In this latter case you will need to adjust each one.
TR