For all of you (us) canadians... Tiger Direct now has a good Memory Configurator utility, much like Crucial's. Tiger Direct is a great, responsible and fast supplier. Looks like you can choose a vast number of Apple models and find the best RAM. Here's the link: Tiger Direct RAM Configurator EDIT: NEVERMIND! I apologize for not checking it out thoroughly before posting. I selected some iBook models and it says nothing is available. Might be a good idea to keep an eye on it for a while though, as it is a new feature on their website.