Search form question?

I am trying to translate the word ‘Search’ on the button imy sidebar. I have changed it in searchform.php (below) but it is not showing? I looking in sidebar but that seems just to point to searchform?

<form method=”get” id=”searchform” action=”<?php bloginfo(‘url’); ?>/”>
<div><input type=”text” value=”<?php the_search_query(); ?>” name=”s” id=”s” size=”10″ />
<input type=”submit” id=”searchsubmit” value=”Recherche” />