I think that Autodesk offers a trial version of 3ds Max.
Now can you export anything with this version, I don't know.
http://usa.autodesk.com/adsk/servlet...112&id=5972446
Ultimate Unwrap 3D provides import/export plugins for 3ds Max (4,5,6,7,8,9).
http://www.unwrap3d.com/downloads.aspx