My office just upgraded to 2007, and I finally figured out how to show the number of pages in the header of a Word document (as in, Page 3 of 17). I thought this might be useful to somebody who hadn't found it.

In the earlier versions of Word I've used, this is easy, but in Word 2007 you have to go through some hoops. Choose the Insert tab of the "Ribbon", then click on Page Number (in the Header & Footer section) and choose Top of Page or Bottom of Page. Scroll down the formats shown to the "Page X of Y" section and click on the version you want (left side, center, or right side). You may want to remove the boldface.