My drupal site is down. According to my web host, it has been infected with PHP based malware. Their recommendation was to backup any data (such as images or style sheets) and remove all of the Drupal installed files and malware. Then, upload a new copy of Drupal from the Drupal website and restore that data. I am not sure which directories I should copy over to the new installation. I know enough to copy over the settings.php so that it will connect to the same database. Past that, I am uncertain. Can anyone help me out?