Attached Link: http://www.paralelo.com.br/main.htm

"ProgMesh is a 3D polygon mesh simplification program which enables you to reduce the number of polygons in your objects without a visible loss of quality. Given that ProgMesh supports the 3DS (3D Studio) file format, all object properties such as material and texture are maintained at all detail levels. You can also use it to fix badly modeled objects, removing duplicate, degenerate, and invalid faces." Perhaps this is what you are looking for? ProgMesh 1.2