Windows Vista contains a built in function that is called “Previous versions” or “Shadow copies” which is based on the Volume Shadow Copy service that also handle System Restore in Windows Vista. As a matter of fact System Restore and Previous versions go hand in hand and a system restore point include “Previous versions”.
The “Previous versions” feature means that at any time you can right click a file or folder and choose to open and/or restore the file or folder from an earlier point in time. The great thing is that both backup copies made from scheduled backup as well as local snapshots of the files are listed when you choose to restore the files and folders.
“Previous versions” will also let you restore files that you have deleted but to be able to do so you have to open the folder in which you originally kept the deleted file. A note to take when restoring files is that if you rename a file and choose to restore an earlier copy using Previous versions you will not find any. The feature “Previous versions” locates previous versions of the file by its file name.
Also be aware of the fact that if you have a dual boot system with both Windows XP and Windows Vista, all System Restore points (including Previous versions) are lost whenever you boot to Windows XP.
The feature “Previous versions” is unfortunately only available on Windows Vista Business, Enterprise and Ultimate versions of Windows Vista.