Andy,

See:
http://gregmaxey.mvps.org/Repeating_Data.htm

--
Greg Maxey/Word MVP
See:
http://gregmaxey.mvps.org/word_tips.htm
For some helpful tips using Word.

Andy Roberts wrote:
What I want to do I have a main document with various fields
throughout it in places where a particular unique piece of
information is required, such as a company name. How can I get
several fields to hold the same information, so that when the
information is added it appears throughout the document in all the
correct places. I only want to type it once.
I presume if the document is protected then only the fields can be
altered.
Thanks

Andy