http://www.teachme-dt.com
This tutorial was requested, and shows you how to import bitmaps and alter their pixels ready for use with the laser cutter.
If you have any requests please leave me a comment and I will ensure I do a tutorial for you. These have been proved very useful in the classroom, so don't be afraid to ask for simple tutorials for your pupils!
(Some of the letters got cut off on the credits reel; I don't know why!)