It is much easier if people would read before posting.
Link has already been given in reply #14
Clearly it isn't much easier, otherwise they wouldn't need to ask. Not everyone is going to get a good (re)search even if they tried, the forum search function is poor to pathetic (unless you get the right search string) and many simply don't know how to use Google and the site search function.
So just copy and paste a canned response (I'm sure you have your own in a text file) with a URL, that should take no longer than what you are saying and it helps the user directly.