It's so easy to forget that most of the people who use PCs just use them as a tool - whether it's corresponding with friends in Oz or writing wise words for the Parish Magazine or collating their stamp collection. Small wonder that their eyes glaze over when we start talking about Administrator privileges or FAT32 or even disabled virus updates.
I'm out in a few mins (on me day off, of course) to sort such a person - or rather her computer; V. is beyond sorting - because she has a friend who knows about computers... i.e. he took a City and Guilds in about 1956 or something. When I get into trouble, it's because I think I know best, or have a senior moment, and there's no cure for either of those.