Backup is an application that works with a .Mac account. It enables you to back up all or part of your hard disk to CD, DVD, or your iDisk storage space.
To use Backup, you must download and install the Backup software. You can get it from the Backup main page on the .Mac Web site. Once installed, you set options to determine what should be backed up and where it should be backed up to.
Click the Backup button on the .Mac Web site to display the Backup main page.
Click the Download Backup 2 button.