Hello,
Currently I'm using the Microsoft bluetooth mouse and I'd have to say that actually it is compatible as is without any adapter, just using the built in bluetooth for the powerbook. When I got my mouse I just turned on bluetooth for my book and the mouse just took care of the rest. Id have to say that Im very happy with the mouse so far, fits comfortably and have th buttons mapped to expose. I havent tried mapping them to do other functions yet so not sure how that well that goes.Papersushi, when you said that the mouse/keyboard didnt work for you, where you saying that it just didnt work out flat out or that you just couldnt map some of the buttons to specific things? The mouse is working fine with the powerbooks built in bluetooth, no extra adapter needed for me.
JRam