another option, though using obj formay as PhilC says is usually the easiest. I'm using max 3.1 description, but 4 or 5 is the same. Be sure to explode ang Groups in max first. In Max, select all objects and from Command Panel, use Hierachy, Affect Pivot Only, Center to Object. With all objects still selected, go to Utilities on command panel and ResetXForm, Reset Setselected Now Export as a 3ds file and the Explosion problem should be defused.