Schtasks: To create, delete, query, change, run, and end scheduled tasks on a local or remote computer

Schtasks used to create, delete, query, change, run, and end scheduled tasks on a local or remote computer. Running Schtasks.exe without arguments displays the status and next run time for each registered task.

The following syntax is used to create a task on the local or remote computer.
schtasks /Create
[/S system [/U username [/P [password]]]]
[/RU username [/RP [password]] /SC schedule [/MO modifier] [/D day]
[/M months] [/I idletime] /TN taskname /TR taskrun [/ST starttime]
[/RI interval] [ {/ET endtime /DU duration} [/K]
[/XML xmlfile] [/V1]] [/SD startdate] [/ED enddate] [/IT] [/Z] [/F]

Deleting a Task
The following syntax is used to delete one or more scheduled tasks.
schtasks /Delete
[/S system [/U username [/P [password]]]]
[/TN taskname] [/F]

Running a Task
The following syntax is used to immediately run a scheduled task.
schtasks /Run
[/S system [/U username [/P [password]]]]
/TN taskname

Ending a Running Task
The following syntax is used to stop a running scheduled task.
Note To stop a remote task from running, ensure that the remote computer has the File and Printer Sharing and Remote Scheduled Tasks Management firewall exceptions enabled.
schtasks /End
[/S system [/U username [/P [password]]]]
/TN taskname

Querying for Task Information
The following syntax is used to display the scheduled tasks from the local or remote computer.
schtasks /Query
[/S system [/U username [/P [password]]]]
[/FO format /XML] [/NH] [/V] [/TN taskname] [/?]

Changing a Task
The following syntax is used to change how the program runs, or change the user account and password used by a scheduled task.
schtasks /Change
[/S system [/U username [/P [password]]]] /TN taskname
{ [/RU runasuser] [/RP runaspassword] [/TR taskrun] [/ST starttime]
[/RI interval] [ {/ET endtime /DU duration} [/K] ]
[/SD startdate] [/ED enddate] [/ENABLE /DISABLE] [/IT] [/Z] }
http://technet.microsoft.com/en-us/library/bb490996.aspx