ertel,

Here is the cause and solution as posted by Suzanne Barnhill to a similiar
question:

This is one of the many naughty things the Microsoft Works Suite Add-in for
Word is responsible for. If you're not launching Word from the Works Task
Launcher and don't intend ever to use a Works database or address book as a
data source for a Word mail merge, then you should uninstall the add-in
through Control Panel | Add/Remove Programs. After you've done that, restart
Word, open Tools | Customize, and use the mouse to drag all but one of the
Mail Merge entries off the menu.