u wanna do that? Well you can, here's how. ** DO this at your own risk, the manufacturer's backup is assured to work while if you messed up somewhere, your's may not Always back up your important data either way because the drive may fail"
First install a disk partitioning software such as Norton Parition Magic and set aside a portion of your current hd as a place for a disk "image" (make sure its big enough to hold what you need My recommendation is atleast 5gb) Next install Norton Ghost. In Norton Ghost click on create recovery disks and have the disks saved to your newly created partition. Now if anything goes wrong, insrt the Norton Ghost cd rom and boot off that cd. then use hte cd to image the hd back if anything happens to your windows installation that you dont like (virus etc..) It would be helpful to mark the image drive as "read only" to prevent accidental tampering.
This is just a basic guide, nothing in detail.. I personally use a different system to maintain the office pcs (mine is so much more complicated).
EDIT: This only works for one computer, each pc (unless they r identical) requires its own image. Microsoft XP would lock up if too much hardware is changed to prevent you from taking one hard disk and moving to to another pc. (its a anti piracy thing). There was a time when you could disk ghost a image of one hard drive to antoher then take 1 of the hds out and use it on a different pc. Sadly, those days r over now...