Menu item for each OG

Hi,

I just wondered if it wouldn't be too difficult to write a module, that shows a menu item for every existing organic group. It is the first time that I'm trying to write my own module, so it is just a first attempt.

// Parent menu item
$parent_id = 431;

function mymodule.menu {
	foreach(<--og node-->) {
  	$items['<--path-->'] = array(
			'title' => $node->title,
			'description' => 'Your description goes here.',
			'page callback' => '<--show node xy-->',
			'menu_name' => NULL,
	    'tab_parent' => $parent_id,
  	  'type' => MENU_NORMAL_ITEM,
		);
	}
	return $items;
}

Is that basically how it could work? I didn't really find an explanation how to use the variables of hook_menu. Is there anything better than http://drupal.org/node/300997 ?