Hey, the CS4 version allows to resize brush size with Alt+Right Mouse Button+drag, just like as Painter do. This method allows to switch fastly between large and small sizes, not like repeating [ and ] buttons. But the problem is I have no idea how to map this hotkey to Intuos3 button (stylus or tablet), since Wacom settings focuses on keyboard and mouse buttons separately (with exception of Any key button+Left Mouse Button combination).
I've tried to change hotkey in Keyboard Shortcuts menu, but I couldn't find it - well, it seems that feature wasn't made up properly.. anyway, any ideas?
Perhaps there are another ways to change Photoshop hotkeys? You know, secret files or something, hehe