If you have lost your CADWorx Ribbon tabs or Menus (from the menu bar) you can simply load them by using the following in the command line:
LOADMENUPLANT [enter]
For loading the CADWorx Equipment palette or toolbars see the following post: http://autocadtips.wordpress.com/2013/06/21/cadworx-equipment-palette/
A friend of mine also has a great blog post explaining how to load both the CADWorx Plant and Equipment modules in the same session found here: http://streamlined-design.blogspot.com/2013/07/use-acadrx-to-load-cadworx-plant-and.html
Please keep the Streamlined Design blog in mind for some terrific advanced AutoCAD customization tips & techniques for CAD managers and CAD admins. There are also some .NET programming examples available
~Greg
