Wouldn't it be perfect if you could write a piece of code that either; made someone read the rules and guidelines before posting, made them use their own common sense and try things first, or re-wrote exactly what they typed in a form that would actually answer their own question with something along the lines of "Oi, muppet. Why don't you go and read something first?"
But unfortuntely we can't so people are always going to ask questions that you frustratingly can't answer because you simply don't have the time or energy to write a novel. I would suggest a simple response with some references would suit in that instance.
Agree with the sticky thing though... might help with the second problem, especially if you categorise the references and helpful links. I'm sure if you felt the need to write one yourself, some kind and caring moderator would sticky it for you