[syslog-ng] Apache vhost logs

Hello again, I try all the weekend to do it but there is no luck on it. I want to send all apache vhosts logs to a remote server. I read this guide: http://www.facebook.com/note.php?note_id=338493890632 But, when I create the named pipes, I cannot restart Apache. I try to send the logs files this way: file("/var/log/apache2/access.log"); file("/var/log/apache2/error.log"); But on the server-side there is any access.log and error.log files. I have lots of vhost on the client-side. How could I configure it? Thanks and best regards.