Using Word 2002.

I need some help or direction to establish a letterhead template.

I created a letterhead template. I want it to appear in the Templates
Window under the Letters and Fax tab. I did a "save as" .dot and placed
it in the F:\program files\office\templates\letters & faxes folder but
it doesn't show up in the Templages Window under the L &T tab.And when
it does appear I'd like to see a preview of it also.

When I created the prototype template and put it on my desktop it
appeared under the General tab, but with no preview capability. Also,
the dot extension on the name appeared whereas the other templates had
no extensions in their names. However, when you right clicked on any
other template and selected properties, the name showed with the dot
extension but the .dot did not appear in the template screen tabs. How
did they do that?

TIA