htaccess single file protection doesn't work

Hello!

I want to protect the login page of my WordPress blog using Apache.

According to http://www.askapache.com/htaccess/apache-authentication-in-htaccess.html this is the code i put on my .htaccess placed on the root of my website:

<Files wp-login.php>
    Order deny,allow
    Deny from all
    AuthType Basic
    AuthName "bliah blah"
    AuthUserFile /home/mhd/www.digitalking.it/htdocs/protlogin/.htpasswd
    Require valid-user
    </Files>

Then when i visit http://www.digitalking.it/wp-login.php it simple show a page of my web hosting http://img191.imageshack.us/img191/7165/loginee.jpg instead of prompting for authentication and then go to login page if successfull.