Simple Failover can run as a Windows Service. This means you can have Simple Failover running without being logged into the computer.
Please note that the Simple Failover service runs under the "SYSTEM" user account, so all scripts and other actions taken by Simple Failover over will be performed with that security context.
As with other Windows services, you can start and stop the Simple Failover service using the Services management console (See Windows Control Panel / Administrative Tools / Services).
And you can start and stop it from a command prompt using "NET START sfo" and "NET STOP sfo".
This option is not available on Windows 95, 98, and Me computers.