... the URL that did the trick was http://vgupta.com/Products/Abstracts/Fill.pdf contained in one of the five messages from the link I mentioned in my last post.
In response to somebody else's query on Fill in Excel, Kees had suggested the URL http://reviews.cnet.com/5208-7813-0.html?forumID=31&threadID=122757&messageID=1391627. I followed the link, and was truly amazed at the wealth of information it contained. Can you suggest some similar source for Fields in Word 2003? I would request info from basics to advanced on Fields in Word.