For more information of this virus/hoax, please go to the following URL <symantec.com/avcenter/venc/data/sulfnbk.exe.warning.html/> The file mentioned is a Windows utility. Whenever you receive a "send this to everyone you know" message, it is always a good idea to check out one of the sites that lists current hoaxes just to be sure before you sound an alarm. If you have already deleted your file and want to restore it, Symantec gives info about how to do that. Best wishes!