I've been going back and forth between using Solidworks and M\axwell, and exporting my models as Lightwave objects, and doing all the surfacing and texturing in Lightwave. This seems to work better, and once the mesh in is Lightwave, animations are not a problem.
BTW; Baren-Boym (
http://www.baren-boym.com/) makes the 3D File Converter program. It allows you to save as obj, lwo, and 3DS Max objects. The only "drawback" to this is that it's actually "grabbing" the OpenGL mesh from the screen, and outputting this as the poly mesh. If you have everything "cranked" it can make an object have millions of triangles. There is a control for lowering this...
I also have PolyTrans - I have never really figured out how to get a good mesh from SW to another format. Others use it with tremendous results.
If you do try out B-B's 3D converter, there is a very easy way to control surfaces for texturing; just make them different colors (doesn't matter what the colors are). Then, when you bring it into LW for example, each surface is seperate, making it very easy to texture (or break apart to make dielectrics, emitters,etc.).
Mike Tripoli