Hi Rafael, I had trouble e-mailing you directly. If you haven't already have a look at : http://www.crackle.org/CrackleBox.htm If you want more info I have a bunch of stuff that I have collected. Here is a link to a clearer schematic. http://www.canyons.edu/departments/comp_sci/forbes/crackle%20box/mycracklebo x.jpg Doug Forbes