Hi Kia,
I think what you're looking for is the authentic Windows logon screen
(CTRL+ALT+DEL).
You should be able to force this for all users by doing the following:
1. Click the Start button , type netplwiz in the Search box, and then
press ENTER. If you are prompted for an administrator password or
confirmation, type the password or provide confirmation.
2. Click the Advanced tab, select the Require users to press
Ctrl+Alt+Delete check box, and then click OK.
This should work on all versions on vista.
Hope it helps
Grtz
Rob Jonas