from: http://drupal.org/node/223440#comment-1101275
khonggiannet - November 10, 2008 - 12:30
You could improve above code to have the theme suggestion for all content types in your site.
<?php
function my_theme_preprocess_page(&$variables) {
if ($variables['node']->type != "") {
$variables['template_files'][] = "page-node-" . $variables['node']->type;
}
}
?>
Now just make your template in form page-node-your_content_type. If it's missing, the default page template will be used.