Welp, I've added a new article to the website because the fraction thing needs to be out there. Had a textbook lesson in the importance of learning styles; telling my student how to do the fractions wasn't getting through, much less sticking. (Big clue: when the student points to the denominators instead of talking when you ask "what do you need to do to add fractions?" he's probably a visual-spatial learner, not a verbal one, eh?)
http://www.resourceroom.net/math/denominators.asp

(Results: "This is a totally different way of doing this!")

And yippee!!! I did my very own graphics in Fireworks and made them transparent!!