if you have the 2 or 2i version some came with it i have found some of the same problem as u in that not all the door styles are there the drawing name is
C:\Program Files\Autodesk Architectural Desktop 3\Content\Imperial\Design\Equipment\Office
And in
C:\Program Files\Autodesk Architectural Desktop 3\Content\Imperial\Design\Furniture if everyone helps everybody the world will be a better place