In 2007, use the data source to create a Directory type mail merge in the
main document of which you enter the merge fields into the cells of a one
row table and have nothing else in the document. When you execute that
merge to a new document, that document will contain a table with a row of
data for each record in the data source. Insert a row at the top of the
table into which you enter the names of the merge fields and then save that
document in 2003 format and use it as the datasource for the merge in 2003.

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Hope this helps.
Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.
Doug Robbins - Word MVP
>I created a Mailmerge word and database file in Word 2007 and now want to
> open it on a computer using Word 2003 (.doc). I saved the word 2007 file
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>
> CJC