Add Commands to the Quick Access Toolbar
Probably the most helpful customization for Word 2007 is to add buttons the Quick Access toolbar. The simplest way to do this is by clicking the small Down arrow to the right of the Quick Access toolbar and selecting a new button to add. But this is quite limited, because there are only a small number of commands you can add in this way.

A better method is to click the Office Button, choose Word Options and then Customize. The screen below appears. Choose a command from the left-hand side of the screen that you want to add to the Quick Access toolbar and click Add. You can change the order of the buttons by highlighting a button on the right side of the screen and using the Up and Down arrows to move it.