[Plugin: Simple Facebook Connect] Customizing the Login Page

While there are a few plugins that will do that, you can actually just insert the code below into your theme functions.php file:

/* BEGIN custom login & register screen */
function my_custom_login_logo() {
echo ‘<style type=”text/css”>
h1 a { background-image:url(‘.get_bloginfo(‘template_directory’).’/images/logo-login.png) !important; }
</style>’;
}
add_action(‘login_head’, ‘my_custom_login_logo’);
function change_wp_login_url() { echo bloginfo(‘url’); }
function change_wp_login_title() { echo get_option(‘blogname’); }
add_filter(‘login_headerurl’, ‘change_wp_login_url’);
add_filter(‘login_headertitle’, ‘change_wp_login_title’);
/* END custom login & register screen */

This will let you replace the default WP logo and link. I moved away from a plugin to this method months ago; live example with the SFC plugin.