If you want to set a password under Windows XP, select the use password protection on recovery check box, and then set the password in the User Accounts window in Control Panel. After you set the password, when the screen saver starts running, press either key or move the mouse, a dialog box appears prompting the user to type the password. You must type the correct password to cancel the screen saver operation, or the contents of the screen saver will always be displayed.
Specific methods
1. Be sure to set up the screen saver first, select the time to wait and check "Use password protection on recovery"
2, to set the current logged-on user password, must be set, the default for administrator users
3. If you are using Fast User Switching, select the Show Welcome screen check box. You can view and set in the Control panel = "user Account" = "Change the way users log on or off"