Thanks Phil
I am making a vehicle, for example, and it would be nice to be able to pose the steering without having to put null objects everywhere.
I think I see what you're getting at now. The bone info would't be stored in the obj file would it?
I'm modelling in metasequoia, which does do bones but only if you can read japanese - I don't and thats where the similarity ends. Do I see blender coming over the horizon?