Use CSS to hide elements from the printer - see
http://www.alistapart.com/articles/goingtoprint
Basically, taking the top shared border as an example:
Open the top shared border in FrontPage - _borders/top.htm
Wrap the entire content in a div with class that will be defined to hide
when printing - in code view:
<body>
<div class="noprint">
Rest of content - banners, navigation, whatever
</div>
</body>
</html>
Do the same to all shared borders, and pages used in iFrames
Add the following CSS block to EVERY page (including those used in
iFrames):
<style type="text/css" media="print">
..noprint {display: none;}
</style>
This goes just before the </head> tag in code view - FrontPage will move it
when you save the page to place its shared border meta tags below it.
Note that this will not work in IE5.5 and earlier, and as Tom implied,
anyone can turn off CSS.