Dynamic404

With the Joomla! 1.5 component Dynamic404 you can redirect 404-pages to other URLs easily. This way, visitors will never get an annoying "404 Not Found" page anymore, but they will be redirected to the right page. The Dynamic404 component works out-of-the-box by redirecting 404-pages to other pages. To determine which page is the closest match, it looks at Menu-Items and articles to find a matching alias. Alternatively, you can configure redirects yourself from within the Joomla! Administrator. This way you can even fix URL-typos made by your visitors.