Auto email response to a visitors form submittal

Hi, I have recently begun my own e-commerce website but am relatively new to the whole HTML, PHP, and Java Script concept. My current stumper is to figure out how to set-up an Auto response e-mailer that will immediately send a pre-constructed email (including graphics) to visitors when they fill out a request form for the specified email. Of course I know that the form interacts with a PHP file on the server, and that same PHP file is already set-up to automatically send me a confirmation when visitors submit a request; but sending an actual order confirmation to the customer is not what I'm trying to accomplish. (That's down the road). I am just looking for a way to store and send a copy of a pre-constructed email to anyone who requests a copy. Is it possible, and if so how can I do it?