Drupal 7 doesn’t use tpl files for nodes or content types

If you are copying the default page.tpl.php to use for either a specific node or a specific content type but Drupal is ignoring it there are usually two main reasons:

1. tpl file name
   If you are used to the D6 naming conventions, be aware it has changed in D7. The new naming conventions are here
2. Preprocess function
   You may have forgotten to put a preprocess hook in your theme file. For example I have this in most of my Zen sub themes:
   function MYTHEME_preprocess_page(&$variables, $hook) {
   //some other stuff
   if (isset($variables['node']))
   {
   $variables['theme_hook_suggestions'][] = 'page__type__'. $variables['node']->type;
   $variables['theme_hook_suggestions'][] = "page__node__" . $variables['node']->nid;
   }

   }


Hope that helps