Code: Custom Node Add/Edit Title

function phptemplate_node_form($form) {
  switch($form['type']['#value']) {
    case 'my_node_type':
      $title = empty($form['nid']['#value']) ? 'Add a new custom node' : 'Edit a new custom node';
      drupal_set_title($title);
      break;
  }
  /** note: returning drupal_render_form() will bump your save / preview buttons up to the top **/
  return theme_node_form($form);
}