Hi again, a few info more about my hack.
At a first time I got all php files hacked with the code you know.
I editet index.php just to show to the visitors that a mainteinance was going on.
At a later time, few hours later, the .htaccess file was hacked too and this is very strange beacuse the permissions on it where r-r-r, so i guess something has the control over my server, is that possible?
I deleted the hacked .htaccess and replaced it with a new one from a backup but then again it changhed to the hacked version.
Any ideas?