Scheduled Backups

While messing around with the backup options in Yast, I've scheduled a backup job to run at 9:00PM and then again at midnight and 00:01. It seems that every time you change the schedule for the backups in Yast it doesn't delete the old schedule. How can I edit the scheduled times for the backups to run? I tried "crontab -u root -l" and there is nothing listed. Thanks, Steve --- [This E-mail scanned for viruses]