In Wildfire 2.0, you can initiate a feature (say, extrusion) and when sketcher opens - "place section" and hit the file type drop-down and select ".dwg" to pick your ACAD 2D file. You can then extrude the geometry. As I recall - you first have clean up the 2D .dwg so that it includes only the geometry you want to use for your geometry profile (in ACAD or UStation). If you don't - Pro will give you a warning about taking a long time to import the section and your computer will hang, etc. Not good.