Change language, last visit member datetime!

I got this code for viewing the date & time of the last of a member:

Add this to functions.php:

function appthemes_last_login($login) {
    global $user_ID;
    $user = get_userdatabylogin($login);
    update_usermeta($user->ID, 'last_login', current_time('mysql'));
}
add_action('wp_login','appthemes_last_login');

function appthemes_get_last_login($user_id) {
    $last_login = get_user_meta($user_id, 'last_login', true);
    $date_format = get_option('date_format') . ' ' . get_option('time_format');
    $the_last_login = mysql2date($date_format, $last_login, false);
    echo $the_last_login;
}

In your theme:

<?php
global $userdata;
get_currentuserinfo();
?>

<?php _e('You last logged in at:','appthemes'); ?> <?php appthemes_get_last_login($userdata->ID); ?>

It works, HOWEVER: it displays datetime in ENGLISH.

e.g. : You last logged in at 24 January 2011 18:40

But I’d like to have that in DUTCH.

The language settings in WP are fixed to Dutch though.

I reckon I have to change the language settings of MySQL??

Anyone know how to do that?