I recently got a 15" PB and now start learning to use OS X. One problem I have is, when I open Safari or IE (or any other window), it's impossible to maximize the window such that it will take up the whole screen. Even if I clicked on the 'maximize' button on the window, it is only taking up 2/3 of the screen size. Is there anyway to maximize it to the full screen size? One more question. I'm those kind of lazy person who LOVE to use hotkeys. What I meant by hotkeys is like in Windows, F1 - Help, F2 - Rename, F3 - Search, ALT + Tab -- switch between open applications, ALT + Enter -- Properties, etc etc. As I'm new is OS X, I don't have any idea what hotkeys are available. Can someone provide me a list of those? I'm especially interest in the hotkey for switching between open applications. Thanks a bunch.