\ said:
NoteIf you are restoring a 64-bit system using a 32-bit Complete PC backup or a 32-bit system using a 64-bit Complete PC backup and have more than one operating system installed, you should not select an operating system. If an operating system is selected by default, clear the selection by clicking a blank area of the window, and then click Next.
If you unclick the OS to restore it should install a fresh copy SEPERATE from the original install you had. Vista CANNOT be upgraded to 64-bit or downgraded to 32-bit, what you installed is what you’ve got.
The complete restore that it is talking about is similar to the WinXP System Restore and it uses a similar (but more inclusive) type of restore points.