A. When you enable XP's Fast User Switching, you can switch among users without having to close any users' open programs. To switch users, you can

  • Press the Windows key and L simultaneously.
  • Press Ctrl+Alt+Del, click Shut Down, then select Switch User.
  • From the Start menu, select "Log off", then select Switch User from the displayed dialog box.

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All of the above options will take you back to the Welcome screen, where you can log on as another user.