Is it possible to switch out an icon that is display in zen or today? As in replacing the calender app on the home screen to the media app?

Yes all you have to do is simply highlight the icon you want to move push the BB/menu button and scroll down to move then you move it in the spot you want it to be (note: the first five icons in the menu are also your home screen icons)

oh. thanks! i didnt really make the correlation between the first five icons and the icons shown on the home screen