When I fired up Word 2007 and opened a document, it put me in the "Print Layout" view. I'm accustomed to working in what was called "Normal" view in Word 2003, so I did Alt+V, N to try to switch to Normal view.
So far so good after the Alt+V -- Word 2007 even put up a nice little tooltip letting me know I had started typing a Word 2003 shortcut -- but subsequently pressing the N key had no effect.
I opened up the new "View" ribbon, and saw in the "Document Views" section that "Normal" was no longer present, but a new "Draft" view was available. I clicked that, and it put me in the equivalent of what "Normal" view was in Word 2003.
So "Normal" is apparently renamed to "Draft" in 2007... I switched back to "Print Layout" view (Alt+V, P did work), and then tried Alt+V, D to switch to "Draft" view -- it worked.
I fired up Word 2003 on my test machine to verify that Alt+V, D didn't work on that version. I expected it to have no effect... but Alt+V, D actually has a different function in Word 2003: hide/show the Document Map!
Consequently, the Alt+V, D shortcut for "hide/show Document Map" in Word 2003 is essentially broken in Word 2007 as well (since it now has a different function than before). I couldn't find any alternative "Alt+V" shortcut in Word 2007 for Document Map, although the "new" Alt+W (View ribbon), V, M shortcut does work for "hide/show Document Map" in Word 2007.