To get the date format you want, you can add a formatting picture switch as follows:
• select the mergefield;
• press Shift-F9 to expose the field coding. It should look something like {MERGEFIELD MyDate} where 'MyDate' is your mergefield's name;
• delete anything appearing after the mergefield's name and add '\@ "d MMMM yyyy"' to the field, as in {MERGEFIELD MyDate \@ "d MMMM yyyy"}. With this switch your date will come out as '2 August 2008'.
• position the cursor anywhere in this field and press F9 to update it;
• run your mailmerge.

Other possible date formatting switches include:
. \@ "dddd, d MMMM yyyy";
. \@ "ddd, d MMMM yyyy";
. \@ "d MMM yyyy";
. \@ "dd/MMM/yyyy";
. \@ "d-MM-yy".


Note: You can swap the d, M, y expressions around, but you must use uppercase 'M's for months - lowercase 'm's are for minutes.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]