I used Mockingbird (http://gomockingbird.com/ http://gomockingbird.com/) supplemented with Adobe Fireworks for the images. Mockingbird was free when I wrote the

I used Mockingbird (http://gomockingbird.com/ http://gomockingbird.com/) supplemented with Adobe Fireworks for the images. Mockingbird was free when I wrote the book, but I think they might charge now. It's still probably a good deal, though.