Now that you've heard what everyone else does, if you actually want any specific help you're going to have to tell us a lot more about what it is you do, and what it is you want backed up.
e.g. I don't back up *anything* on the wife's laptop, but her emails are all via Yahoo, so they're already backed up in the cloud. OTOH, the office machine that runs Quickbooks and keeps two important company databases is backed up daily to the cloud (specifically, Amazon via Jungledisk). My own machine, used primarily for development, images the C drive daily to a second drive. All three methods have already been described, but which one is right for you just depends on what the machine in question is doing. Note that no backup method will ever prevent you from having to reinstall your OS occasionally, so don't bother trying to reach for that lofty goal. ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************