Or cheaper still get Drive Image 7 from ebay if you can this is the last version from Power Quest before they were bought out by Symantec who also own Ghost. The latest version of Symantec/Norton Ghost is a combination of the supposed best bits of Drive Image & Ghost. Some don't like this first incarnation. There is a little more than putting in a CD and everything goes back to normal. Your C:\ image isn't likely to fit on a CD, you usually create an image saved on either a different partition and preferably on a second HDD and the boot CD or Floppy is able to restore the image from your HDD copy.
There are many drive imaging software tools out there, you do however need to ensure that they will be compatible with your system.
I have been using RegCompact for a month or so without problem.