Struggling to setup your shared coordinate system in Revit to match your site in Civil 3D?
This is the tool for you.
Also watch the video as it shows how the tool works and how to share your Revit model back to Civil 3D and also Navisworks.
(Also because its my demo )
Currently for 2012 releases of Civil 3D and Revit.
http://labs.autodesk.com/utilities/bim_coordinator/
Jack Strongitharm