When my eldest children were about 6 and 4 respectively, we got a Windows 98 computer that they could use at home. One of the things I love about kids and computers is that they're fearless. They learn through trial-and-error without the slightest hesitation. In contrast, teaching your parents to use the computer is full of questions about whether they're "allowed" to do something.

Anyway, my daughter (four years old at the time) got a new game (probably educational) and when she tried to run it, she was told there wasn't enough hard drive space and her mom told her to "wait until dad gets home".

Undaunted, she went looking at the hard drive and recognized most of the programs as games she (or her brother) played, but noticed one they never used ... that game was called "Windows". (The reinstall included an update to Windows XP and restricted user accounts for each of the kids ... I learned something too).