Up now at Developing for Dynamics GP, David Musgrave looks at Modifying Microsoft Dynamics GP 2010 Word Templates. A lot of people are excited about the new templates in Dynamics GP 2010 and David demystifies the process of creating new templates.
Modifying Microsoft Dynamics GP 2010 Word Templates
Excel & OfficeGP 2010
Archived post from 2010. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.