Thanks for the info, from what I can see it should be similar to Windows 7 and I have never had a problem restoring from those backups. I save an image probably once every 4-6 weeks and then backup documents daily to an external drive.
Someone asked about the restore, you boot from the recovery CD that you created and select restore from a system image. Some PCs have built in recovery on the hard disk (press F?? on boot, look it up for your PC) but that is no use if you lose the physical disk so the CD is worth creating.