For those who need to publish the understanding of limited user privacy. I suggest you make a registry edit to post a Legal Notice Banner prior to a user's login. This banner for Windows NT causes the to press a button to bypass it for logon.

In Notepad Type
REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"legalnoticecaption"="Banner Heading"
"legalnoticetext"="Your Message"

Now Save Your Document as FileName.Reg

and now you are able to run your .reg file, and enter a legal notice banner at logon.

Here is an example of a DoD Banner:

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"legalnoticecaption"="DOD Warning Banner"
"legalnoticetext"="Use of this or any other DoD interest computer system constitutes consent to monitoring at all times. This is a DoD interest computer system. All DoD interest computer systems and related equipment are intended for the communication, transmission, processing, and storage of official U.S. Government or other authorized information only. All DoD interest computer systems are subject to monitoring at all times to ensure proper functioning of equipment and systems including security devices and systems, to prevent unauthorized use and violations of statutes and security regulations, to deter criminal activity, and for other similar purposes. Any user of a DoD interest computer system should be aware that any information placed in the system is subject to monitoring and is not subject to any expectation of privacy. If monitoring of this or any other DoD interest computer system reveals possible evidence of violation of criminal statutes, this evidence and any other related information, including identification information about the user, may be provided to law enforcement officials. If monitoring of this or any other DoD interest computer systems reveals violations of security regulations or unauthorized use, employees who violate security regulations or make unauthorized use of DoD interest computer systems are subject to appropriate disciplinary action. Use of this or any other DoD interest computer system constitutes consent to monitoring at all times."