Windows Explorer Command-Line Options:

Explorer [/n] [/e] [(,)/root,<object>] [/select,<object>]

/n                Opens a new single-pane window for the default
                  selection. This is usually the root of the drive Windows
                   is installed on. If the window is already open, a
                  duplicate opens.

/e                Opens Windows Explorer in its default view.

/root,<object>    Opens a window view of the specified object.


/select,<object>  Opens a window view with the specified folder, file or
                  application selected.

Examples:

   Example 1:     Explorer /select,C:\TestDir\TestApp.exe

      Opens a window view with TestApp selected.

   Example 2:  Explorer /e,/root,C:\TestDir\TestApp.exe

      This opens Explorer with C: expanded and TestApp selected.

   Example 3:  Explorer /root,\\TestSvr\TestShare

      Opens a window view of the specified share.

   Example 4:  Explorer /root,\\TestSvr\TestShare,select,TestApp.exe

      Opens a window view of the specified share with TestApp selected.