If the whole fotofill.net is blocked it is probably by your hosting company. That is a pretty standard response to this kind of attack. For instance my hoster did this. I had to use FTP to cleanse the site and then contact the hoster to have it unblocked.
There is another thread with details on how to cleanse your site, but basically it involves removing all the site files and reloading from backup. Always, of course, do not restore the zenphoto files but obtain the fixed version and install that.