Header / Footer Switch Between

After you activate the Header/Footer area with Alt + V + H, press the Up or Down Arrows to switch between the Header
and Footer.

Alt + V + H still works in Word 2007 even though there is no longer a View menu.  If you find this an awkward stretch for your fingers, you can assign keyboard shortcuts to the following commands in the Customize / Keyboard dialog box:

     GoToHeaderFooter
     ViewHeader
     ViewFooter
     ShowNextHeaderFooter
     ShowPreviousHeaderFooter