Try create two .reg files with this content (bold). For create .reg files just open notepad, copy the content and save with .reg extension. Then just double-click the first file (you must be administrator) and enjoy. For remove, you use the second file.
CCleanerShredder.reg:
(This added an entry in the context menu of files and folders for secure deletion with CCleaner. You must configure secure deletion in the CCleaner's settings.)
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shell\CCleanerShredder]
@="CCleaner Shredder"
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shell\CCleanerShredder\command]
@="ccleaner.exe /delete \"%1\""
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\CCleanerShredder]
@="CCleaner Shredder"
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\CCleanerShredder\command]
@="ccleaner.exe /delete \"%1\""
CCleanerShredder(remove).reg:
(This removes the context menu entry.)
Windows Registry Editor Version 5.00
[-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shell\CCleanerShredder]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\CCleanerShredder]