As I tell people, I know enough about computers and other things to not make them explode on me.
Though to be fair, I also know enough to be able to hook (some) things up on my own, install things, what have you. It's just when people start getting to the more technical things that I tend to not be able to follow.
So, um. I'm not someone to come to for tech help (I believe my answers are always "I don't know"), but I know how to keep stuff mostly running once they're up and assuming they don't suddenly die? :D