Max 9 an ADT 2007

Hello

I have a file created in ADT 2007 (a complex building). How can I load/import it
to max9?
When I try to import (both dwg and dwt), nothing shows up in the viewports.
I think it is because it is uesed a lot of AEC-objects and so on in the
ADT-file.
In previous versions I coud install a OE (object enabler) that allowed object
data created in Autodesk Architectural Desktop 2006 to be accessed in Max.
I can`t find such a file for max 9/ADT 2007, or am I missing something?

thanks in advance