Use a drill press (so you are sure to get a straight hole). Use a sharp drill bit and a high drill speed, this will help from chipping the finish. Go from the top of the guitar, as this will also help from chipping the finish.
Take your time, line up the bit before you start. If you need to make the hole a lot bigger, use drill bits in sizes in between the sizes instead of just making 1 big hole on the first try.
please posts pics of the results for maximum lulz
Weren't you the person complaining about the unhelpful nature of responses on the ESP board?