Adding custom template hints in Drupal 6

/* this function will add a template entry for the node using it's id.
    i.e. each node -could- have it's own template file.. following the
    schema of: node-112.tpl.php where 112 is the node id. */

function THEMENAME_preprocess_node(&$vars){
    $vars['template_files'][] = 'node-'. $vars['node']->nid;
}
function THEMENAME_preprocess_page(&$vars){
    $vars['template_files'][] = 'page-'. $vars['node']->type;
}