This function already exists. Click the mail merge recipients button on the
mail merge toolbar and click the column head of the column you want to sort
by. Then re-merge.
http://www.gmayor.com/mail_merge_labels_with_word_xp.htm

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Graham Mayor - Word MVP
My web site www.gmayor.com
Word MVP web site http://word.mvps.org
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> When setting up a mail merge document I would like to click on an
> icon on the toolbar to enable me to sort the data according to the
[quoted text clipped - 10 lines]
>
> http://www.microsoft.com/office/community/en-us/default.mspx?mid=f37399a1-ecfe-4
688-a243-54bf1a18caed&dg=microsoft.public.word.mailmerge.fields