A family of Microsoft word processing software products for creating web, email, and print documents.
You can force an update of cross-references in the header or footer by switching to Print Preview and then back to the previous view (use Ctrl+F2 followed by ESC).
For more automated solutions, use a STYLEREF field (see http://wordfaqs.mvps.org/StyleRef.htm#FormField) or use a macro that does the updating for you; see the example at http://www.gmayor.com/installing_macro.htm. The latter method may be required with FILLIN fields.