Tried for first time yesterday. I see that it has placed the Drweb32.dll virus engine file into my C:\Program Files\Ahead\Nero folder. I can't imagine why as Nero does it's own virus check if this option is selected before burning. There is also the file DRWEBASE.VDB in the Nero folder. ?? BTW Is there somewhere on the Dr.Web site where one can check the latest number of virus signatures in the database ? Thanks.