Password on return

You know how there is that option in the screen saver options that lets you put a password on return to the computer. Well I found out that if you just push spacebar it doesnt ask you for a password.

Does anyone know how I can make it so that if you leave the screen saver at all it asks for a password?

Open you system policy editor and make your changes there.

(for WinXP, NT, and 2k only)