If you missed it in the side bar the ACA team have released an extension for those doing renovations.
I know this has often been a request item in the newsgroups so I'm sure it will be welcomed. Follow the link above to read the announcement on the Between the Walls blog or head over to the subscription centre for the download.
I have reviewed a 3d picture created with this pack apparently so there are other bonus's that aren't mentioned in the promo. Paul Cloutier has been doing renderings inside AutoCAD (not ACA) for some time and shared this image. Hopefully the ability to do this is also inside the ACA pack - I would have to assume so. Once loaded, you can use the mouse to rotate your camera view to look all around.
Odin Cary of Archidigm.com has done an in depth review of the extension.