Mine

<VirtualHost *>
        ServerName      sub.domain.com
        DocumentRoot /home/www/sub.domain.com/htdocs
        ErrorLog /var/log/apache2/error.log
        LogLevel warn
        CustomLog /var/log/apache2/access.log combined
        ServerSignature On
        <Directory /home/www/sub.domain.com/htdocs>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride All
                Order allow,deny
                allow from all
                DirectoryIndex index.php
        </Directory>
</VirtualHost>