Download this zip file and extract the two files. The first registry file will add the neccesary entries. The second will remove them. Run the file to merge it with your registry.
Begin by opening the Start Menu and type regedit into the Search or Run box. Press the Enter key.
Once the Registry Editor is running, navigate to HKEY_CLASSES_ROOT\Directory\Background\shell.
Right-click on shell, go to New --> Key, and click on it. Type Control Panel beside the small folder icon and press Enter to name it.
Now right-click on the Control Panel key you just created, go to New --> Key, and click on it. Type command beside the small folder icon and press Enter to name it.
To complete, right-click on (Default) in the right side pane and click on Modify. Under Value data:, type (or copy and paste from this) rundll32.exe shell32.dll,Control_RunDLL and click OK. Close the Registry Editor.