404 redirect in Joomla

Pe un site cu Joomla, webmaster tool imi zice ca are vreo 500 de pagini 404
Cum pot sa le rezolv sa le trimit catre index ? Este vreun plug-in pentru joomla care face treaba asta?
Merci

aici ai cautat? Redirect - Joomla! Extensions Directory

Redirect allows you to detect when Joomla cannot find a page (typically called a 404 error) and then allows you to redirect those pages elsewhere to avoid the error. This helps to avoid penalties search engines apply to your page ranks due to excessive errors.