I've been wondering how these work, so I was glad when I came across the toturial. Check it out on Beate's blog http://beate.blogs.splitcoaststampers.com/2007/05/07/jacobs-ladder-tutorial/#more-787.
As for me, I'm having a lack of mojo. Trying desperately to get inspired. NEED to get a Bday card into the mail. It's going into Mexico and that takes FOREVER. I'll have something soon!