Symantec Ghost makes complete, reliable backups of PC drives, including applications and critical data and you can burn it on CD. So when you have crashed your windows you can start with a special norton ghost floppy disk the saved image/backup.
That image/backup saves your complete windows with all your programs. So you would not need to install all the programs again. Only installing the ghost image. And ta ta. Everything is fine again.
Cheers Angel !