A really fast Disc Imaging Backup Software to make a complete *.mrimg or *.iso copy of your hard drive; it has a built-in scheduler, you can set it up to create backups of the windows harddrive automatically in the background, during you work with Windows XP or Vista. Images can be saved off to network drives, DVDs, or removable drives (USB and FireWire). Images can be password-protected for the security of your data. Using Microsofts Volume Shadow copy Service (VSS). Its very well supported by the company.
The backup images can also be mounted as a virtual drive, which can be very useful for retrieving separate files: you can also restore single files or folders, but backup only the full drive C.
Very easy and quick creation of a Rescue DVD, which you need for restoring of the system harddisk with your Windows XP or Vista.
You can restore or migrate the Operating System to a larger harddisk than the original harddisk was.