Sure - I use them all the time for my pages. Here's what I do.
I put all the BOILERPLATE layout into the template.
I put all the navigation and 'temporal' content into includes.
I make the places where page-specific information will be placed into
editable regions.
That way, the base layout and page infrastructure comes from the template,
the infrequently changeable stuff comes from the includes, and the editable
stuff comes from the, well, editable regions.
I use Dreamweaver, primarily, however, and in Dreamweaver, I have quite a
bit of template logic that I can apply to the child pages that is not
available in FrontPage. For example, I can create special template
variables that define which section of the site a given page would be placed
in. Then the template can test the value of those variables and use that
value to decide which include to place on the page - this is very useful to
select subordinate navigation elements for each section, and it still leaves
the navigation elements in an include (with obvious benefits)....