Display Warning before login for Windows XP

For a security audit, my company was required to display a warning to all users before they are log on to windows. Here are the items we added to the registry to make it possible:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"legalnoticecaption"="Notice"
"legalnoticetext"="Use of this system is limited to authorized individuals. Unauthorized use is strictly prohibited. The administrators of this system reserve the right to monitor its use as necessary to ensure its stability, availability, and security."

Here is a link to the MS Knowlegebase article: http://support.microsoft.com/kb/101063