The only thing you have to do is to copy the following piece of code, and paste it on your functions.php file:function my_custom_login_logo() {
echo '<style type="text/css">
h1 a { background-image:url('.get_bloginfo('template_directory').'/images/custom-login-logo.gif) !important; }
</style>';
}
add_action('login_head', 'my_custom_login_logo');
function my_custom_login_logo() {
echo '<style type="text/css">
h1 a { background-image:url('.get_bloginfo('template_directory').'/images/custom-login-logo.gif) !important; }
</style>';
}
add_action('login_head', 'my_custom_login_logo');
