How To Secure your Desktop Icons and Settings

You can save your desktop settings and secure it from your friends and somebody else by  Windows registry. start the registry editor, go to:

HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explorer

In the right pane create a new DWORD value named NoSaveSettings and change its value to 1. Now restart the computer for the settings are saved.
that's it.you have done it.