Yes, but you don't really need to.
You can do a couple of other things:
1. From the View menu, select Toolbars and check the Mailmerge item.
That will display a Toolbar that has all of the buttons on it that you need
for mailmerging.
2. From the Tools menu, select Customize and in the Customize dialog,
select the Commands tab and then the All Commands Category and scroll down
through the commands until you locate the MailMerge Helper item - it is the
old mailmerge user interface. You can left click and drag this onto the
toolbar or onto the Tools>Letters and Mailings menu. If you do the latter
and you really want to get rid of the Wizard, note the position of where you
have placed the Mailmerge helper item as on the menu it will appear the same
as the item that invokes the wizard, then right click on the one that
invokes the wizard and select Delete.
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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