This procedure is pretty simple and only takes a couple of minutes- but it does require steady hands!
Step 1: Tools
1) A Dremel tool- the smaller rechargeable variable speed model is best but any model should work
2) A 1.0mm hart burr -available here: http://www.cooltools.us/45-Degree-Hart-Bur-1mm-p/drl-324.htm
3) Lots of light (good magnifiers don't hurt either!)