Save a Preview for a Template
The Problem:
Most of the templates in the Templates dialog box have preview pictures. I want to add previews to my custom templates so that users can get an idea of what they're used for.
The Solution:
Open the template (choose File 
Open, or right-click the template in a Windows Explorer window and choose Open from the shortcut menu). Choose File Properties, click the Summary tab, check the "Save preview picture" box, and then click the OK button. Save the template and close it.