I haven't got around to installing Acronis on this Vista machine yet but I do keep backups of my data.
Whenever I put photo's into the Pictures folder they get burnt to CD before going into their appropriate folder, my Excel work starts in a cash book then each month is printed off and filed.
The Documents folder gets burnt to CD on a regular basis and if there's any emails I want to keep I'll print them.
The only thing I haven't done on this machine is do an image of the whole thing with Acronis