If you have access to mortgage calculator code, you might be able to insert
it via the Insert HTML code fragment feature in Publisher. Otherwise,
perhaps Google for calculators, and then link to the pages where they exist.
You can make your link open the URL in a new window, if that helps. Read the
FAQs here: http://www.publishermvps.com/WebDesign/FAQ/tabid/30/Default.aspx
