Use os perfis de exibição do UltraMon :
Display profiles make it easy to switch between different desktop configurations. A profile stores the display mode, position and state (enabled/disabled) of each monitor, as well as which monitor is primary (changing the primary is only supported on Windows 2000/XP and later).
If your computer is used by more than one person, you can use display profiles to set up custom display configurations for each user. Whenever a user logs in, his or her display settings will be applied. Windows XP Fast User Switching is supported.