Situation I normally have, is when I ask them what kind of operating system they're using, NT4, 2000 or XP. Usually the response is "I dunno", but then sometimes I get the smart ones that think and go we've just had an upgrade, so it must be windows 2000. But upon remoting into the machine I can see how easy these people get confused between NT4 & 2000... especially when they've just had an upgrade to office 2000.
mentioned it to a mate, and the response was:
Dave: I'm using Windows 97
Steph: yeah... and I'm using Windows 2003
Steph: but don't tell Microsoft
Computers it seems were not designed for thinkers, just doers.