When a user comes to me with a question about a program I have written, I like to do two things. First, answer the question. Second, change the program so the question won't come up again.
This is particularly appropriate with error messages. If a user has to ask me what an error message means, the message isn't doing it's job. I rewrite it so that next time someone sees it, they won't have to ask me about it. It helps to have just explained it to a live user.
