The clickfree I bought did take a while to find itself but nontheless, works fine for the person who doesn't have a clue (namely a relative!). One click and it is done for them, no hassles.
As BurlyBear says, if you can think a little bit more creatively then you'll be surprised how easy it is if you already have an external drive. So here is a start: http://www.microsoft.com/windowsxp/using/setup/learnmore/bott_03july14.mspx.
Sheepdog in "crontab -e" mode
