I am using Debian Lenny and Apache 2. I changed the default .htaccess file with:

AllowOverride AuthConfig

But I always get the error message not allowed here when putting any instructions in the .htaccess file.

EDIT:

file default:

<VirtualHost *:80>
        ServerAdmin webmaster@localhost

        DocumentRoot /var/www/

        <Directory />
                Options FollowSymLinks
                Order allow,deny
                Allow from all
                AllowOverride All
        </Directory>

        <Directory /var/www/>
                Options Indexes FollowSymLinks Includes
                #AllowOverride All
                #AllowOverride Indexes AuthConfig Limit FileInfo
                AllowOverride AuthConfig
                Order allow,deny
                Allow from all
        </Directory>

        ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
        <Directory "/usr/lib/cgi-bin">
                AllowOverride None
                Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
                Order allow,deny
                Allow from all
        </Directory>

        ErrorLog /var/log/apache2/error.log

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel warn

        CustomLog /var/log/apache2/access.log combined

        Alias /doc/ "/usr/share/doc/"
        <Directory "/usr/share/doc/">
                Options Indexes MultiViews FollowSymLinks 
                AllowOverride None
                Order deny,allow
                Deny from all
                Allow from 127.0.0.0/255.0.0.0 ::1/128
        </Directory>

</VirtualHost>

.htaccess:

#Options +FollowSymlinks

# Prevent Directoy listing
Options -Indexes

# Prevent Direct Access to files
<FilesMatch "\.(tpl|ini)">
 Order deny,allow
 Deny from all
</FilesMatch>

# SEO URL Settings
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)\?*$ index.php?_route_=$1 [L,QSA]

PHP info:

apache2handler

Apache Version = Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny10 with Suhosin-Patch 
Apache API Version = 20051115 
Server Administrator = webmaster@localhost 
Hostname:Port = hw-linux.homework:80 
User/Group = www-data(33)/33 
Max Requests = Per Child: 0 - Keep Alive: on - Max Per Connection: 100 
Timeouts = Connection: 300 - Keep-Alive: 15 
Virtual Server = Yes 
Server Root  = /etc/apache2 
Loaded Modules =

core mod_log_config mod_logio prefork http_core mod_so mod_alias mod_auth_basic
mod_authn_file mod_authz_default mod_authz_groupfile mod_authz_host mod_authz_user
mod_autoindex mod_cgi mod_deflate mod_dir mod_env mod_mime mod_negotiation 
mod_php5 mod_rewrite mod_setenvif mod_status