In .obj, Lisa - the one and only format DS can import directly, though most of the times disregarding the materials - it's so nice when a software stops behaving deterministically, isn't it?
That's why reassigning materials and textures in DS takes so long: no way to know what is what, other than making the single parts transparent one at a time and writing down what has disappeared - nearly as fun as waiting for the outcome of an exam, but less rewarding
I've downloaded and installed Blender but still have to try it out. Is it at least a little user-friendly?