And research the difference from imaging and cloning.
But beware that this is not backup. You have only one copy on yet another failure prone unit.
I have a new HP Pavilion a6500f desktop with Vista. My question is: Can an External Hard Drive back up, not just data files, but the entire C drive, including software programs I have added by installing them from Program discs such as Quicken and Microsoft Office?
If this can be done, it would save me from doing a System Recovery in case of corruption, which deletes all data and programs I've installed since purchase, and enable me to restore my C drive to its latest configuration.