How To Enable Ctrl-Alt-Del in Windows7

Using Windows7 is very different from Vista, including the sign-in feature to
authenticate the user. The ctrl-alt-del feature is missing from the screen so
anyone can access the computer. But there is a simple way to put that
feature back on line. Follow the next few steps to enable that feature.
start -> type the netplwiz command -> open netplwiz -> The User Accounts
box opens with two tabs: Users and Advanced -> Select User Accounts ->
Next select the advanced tab -> Check the box to enable Ctrl-Alt-Del
The secure logon feature will now be enabled when you check “require users
to press Ctrl + Alt + Delete.”
This is nominal security to be sure, but if you want it enabled, it is easy to do.