Does anyone know any good plug-in to import .max-files into Maya?
If you have access to Max, you can export using FBX plugins, and import with FBX into Maya. The plugins are free, available from MotionBuilder site for both programs.
If it's only model exporting you are after, .obj will serve just as well.
For both, you need a Max installation.
Motionbulder was bought by alisa so head to www.alias.com