Same custom designed header across multiple wordpress sites

Hi everyone,

I am putting together a site at http://www.myringminder.com. I created a child theme for the thematic framwork to create this site. The child theme includes style.css, header.php, footer.php, and functions.php.

The problem that I am having is that I would like to have the same header (everything above the gray line) and footer (the green box at the bottom) for other WordPress sites I am creating that don’t use thematic. Is there an easy way to substitute any theme’s header and menu with the custom one that I created? Is trying to just adapt my child theme to each new parent theme the best way to do it, or is there a universal approach?

Thanks for any help!