Does anyone know of a CMS system that will generate the site pages as .html (or .htm) files instead of using a dynamic address?

Most of them will do that if your server allows mod-rewrite. They still use a database, but it looks like html.

Now if what you meant to ask was; is there a script out there that creates html pages and does not use a mysql database, the answer is that I haven't found it yet. I know there is something like that out there.

mod-rewrite is only on Apache, correct? I would be using IIS. Forgot to mention that. I definitely want to use something with a database backend, but I need the pages to have a .html extension instead of a dynamic address. I am planning to retrofit an existing site, but because of search rankings and reciprocal links, I need to keep the existing page structure.