If you go to fellow MVP Graham Mayor's website at:

http://www.gmayor.com/individual_merge_letters.htm

and download a copy of the add-in that I wrote to allow the execution of a
mailmerge to a separate document for each record with the filename of each
document being provided from one of the fields in the datasource, and if you
modfy the following line of code in the Private Sub
app_MailMergeAfterMerge(ByVal Doc As Document, ByVal DocResult As Document)
routing in the MergeApplication Class Module

from:

           NewDoc.SaveAs FldrPath & fnames(i)
           NewDoc.Close

to:

           NewDoc.SaveAs FldrPath & fnames(i)
           NewDoc.PrintOut Background: = False
           NewDoc.Close wdDoNotSaveChanges

Then, before executing the merge to a new document, you select Print from
the File menu and select "Adobe PDF" as the printer and then you click on
the Properties tab and uncheck the "View Adobe PDF results" and "Prompt for
Adobe PDF filename" items and then close that dialog.

Now, execute your mailmerge to a new document and click on "Yes" when you
are asked if you want to create separate files for each document, and then
select the field in the datasource that will supply the filenames, then when
you click on Continue, as well as having the files saved in the directory
that you had nominated, a .pdf will be created in the MyDocuments folder
with the name of the .pdf being supplied from the datasource.

I have just made this modification to the add-in myself and it worked fine.

This article may help you out:

http://www.suodenjoki.dk/us/productions/articles/word2pdf.htm

Tom Winter
tom@nospam.amosfivesix.com