You can have NT display a customized warning by modifying two
registry
entries. After Ctrl-Alt-Del is pressed WINLOGON looks for the
values:
LegalNoticeCaption and LegalNoticeText in the following Registry
location:
\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WindowsNT\CurrentVersion\Winlogon
If both values are blank or absent, NT display the usual Username
and
Password dialog.
If LegalNoticeCaption or LegalNoticeText is not blank, NT
displays an
information dialog box containing the strings associated with
these values.
The user must then press OK to get to the Username and Password
Dialog.