http://support.microsoft.com/default.aspx?scid=kb;en-us;q307856
Run Windows Explorer from a Command Prompt
To run Windows Explorer from a command prompt:
Click Start, and then click Run.
In the Open box, type Explorer, and then click OK.
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Examples
The following examples describe the use of Windows Explorer switches.
Explorer /n
This command opens an Explorer window using the default setting. This is
usually the root of the drive on which Windows is installed.
Explorer /e
This command starts Windows Explorer using the default view.
Explorer /e,C:\Windows
This command starts Windows Explorer using the default view, with the
focus on C:\Windows.
Explorer /root, C:\Windows\Cursors
This command starts Windows Explorer at the C:\Windows\Cursors folder.
This example uses C:\Windows\Cursors as the "root" directory for Windows
Explorer.
NOTE: Note the comma after the "/root" switch in the command.
Explorer /select, C:\Windows\Cursors\banana.ani
This command starts Windows Explorer with the
"C:\Windows\Cursors\banana.ani" file selected.
NOTE: Note the comma after the "/select" switch in the command.
The Windows Explorer switches can be combined in a single command. The
following example shows the combination of the Windows Explorer
command-line switches.
Explorer /root, \\server\share, select, Program.exe
This command starts Windows Explorer using the remote share as its
"root" folder, along with the Program.exe file selected.
