ASK fields in Word 2010 work exactly the same as in previous versions - they create and update bookmarks that you can cross-reference. The cross-references will generally update if you do a Print Preview. Alternatively, to have all the cross-references update when you update the ASK field, simply press Ctrl-A, followed by F9, then respond to the ASK field's prompt.
To repeat data in a document, there are various methods available. For an outline, see:
http://gregmaxey.com/word_tip_pages/repeating_data.html