This seems so obvious, it must have beeen asked before, so sorry if it's a duplicate post, but I did try searching first. I have a PowerBook that spends a lot of time with an external (Apple) USB keyboard attached. On my PB's built-in keyboard, F3-5 control volume. Is there a way to make the same F-keys on my attached external keyboard control the same functions? At the moment they don't. However, F9-11 controls exposé on both keyboards.