I had recently posted regarding the 3DDWFPUBLISH command. While installing Land Desktop recently on some computers I was prompted, early during the installation process, if I wished to install "Express Tools" and "Publish 3D DWF". This prompted me to write this post. We do get calls from time to time asking why, if the user did a complete install, do they not have Express Tools (or some other component) available.
Well, the answer is typically, because it is a separate option during the installation process it may not have actually been installed to begin with.
To install after the fact...
Start > Control Panel > Add or Remove Programs...
Select "Civil 3D..." and press "Change" (which brings up the following).
Select "Add and Remove Features" and press "Next >" button.
You can then select any missing components to be added.