The best (and my personal favorite) Windows Disk Imaging, Backup & Recovery software is available to you for the extremely low price of FREE. You heard it right, if you own a Seagate or Maxtor hard drive you can go to either of their sites and get a free download of Seagate's Disc Wizard or Maxtor's Max Blast 5 which are now rebranded versions of True Image.
If you don't already have Acronis True Image, download one of these free applications now. They are extremely useful for full, incremental or folder specific backups. I can't stress enough how good the software is.