How to enable automatic Auth (IE + Firefox) using Active Directory

[Gustavo Adolfo B Hellwig Junior]

Hi Fellows
Now, my auth are working, but not automatic. I allways need to insert my
username and password from my active directory domain.
What I need to do to enable the feature that when I open the web
address, I don't need to put my username and password ?

My apache conf:

<Directory "/var/www/html/secured">
    AllowOverride Limit AuthConfig Options
    Options ExecCGI
    SSLOptions +StdEnvVars
    AllowOverride None
    Options None
    Order allow,deny
    Allow from all
    AuthType Kerberos
    AuthName "Kerberos Login"
    KrbMethodNegotiate off
    KrbAuthoritative on
    KrbVerifyKDC off
    KrbAuthRealms MYINTERNALDOMAIN.NET
    Krb5Keytab /etc/httpd/conf/servername.keytab
    KrbSaveCredentials off
    <Limit GET POST>
           require valid-user
    </Limit>
</Directory>

best regards 

Gustavo Hellwig Junior