Justin,
Is your include_path set up in php.ini properly? Try setting it to something like:
include_path = .:/any/other/dir
This way, your include files will be accessible in the current directory by default, and then in any other directories that you want to keep as a central staging area for your include files.
<?php
// Will work from ./ or, if it's not
// there, it will work from
// /any/other/dir
include("copyright.php");
?>
Hope this helps!
Cheers,
Jason