rescheduling sql job

Hi,

I need to reschedule a job. SQL Books suggest using sp_update_jobschedule to update the job.

But the stored proc does not exist on my system and returns:
Could not find stored procedure 'sp_update_jobschedule'

Where can i find sp_update_jobschedule or its equivalent??

regards,
Henryyou can also go into SQL enerprise manager, expand your server name, expand management, and double click on jobs, right click on the job in question and click properties.|||Thanks for the reply Thrasymachus... But i need to reschedule on an event... say, when the admin resets the schedule through application.|||fromm Books Online:

"sp_update_jobschedule must be run from the msdb database.

Updating a job schedule increments the job version number."

Are you executing while logged into the msdb or is your sp execution fully qualified like 'EXEC msdb.dbo.sp_update_jobschedule @.parameters = etc...|||Thanks a million... I was looking for it in master