If you use formfields (from the forms toolbar) and protect the document, set
the properties on the source fields to "calculate on exit." See
http://gregmaxey.mvps.org/Repeating_Data.htm for how to use REF fields for
this.
If you are using click-here blocks (macrobutton fields) you can't easily get
automatic updating but you can update. See the link above.
For more about online (protected) forms, follow the links at
http://addbalance.com/word/wordwebresources.htm#Forms or
http://word.mvps.org/FAQs/Customization/FillinTheBlanks.htm especially Dian
Chapman's series of articles.
Hope this helps,

Signature
Charles Kenyon
Word New User FAQ & Web Directory: http://addbalance.com/word
Intermediate User's Guide to Microsoft Word (supplemented version of
Microsoft's Legal Users' Guide) http://addbalance.com/usersguide
See also the MVP FAQ: http://www.mvps.org/word which is awesome!
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from my ignorance and your wisdom.
>I work with documents that are 10 pgs long and have form fields or click
>here
[quoted text clipped - 3 lines]
> company name in the first click here block, it copies the company name
> throughout the document. Please reply back asap.