If you are creating a custom module, you can define the path for the second menu item using hook_menu ().
function user_menu() {
$items['user/custom_register'] = array(
'title' => 'Create new account',
'page callback' => 'drupal_get_form',
'page arguments' => array('user_register'),
'access callback' => 'user_register_access',
'type' => MENU_LOCAL_TASK,
'file' => 'user.pages.inc',
);
return $items;
}
Of course, it will not look different than your existing form, it will just be a different path.
, , hook_form_alter() . page arguments , user_register .