Bette Richards writes: "I get an email from an automatic service that tells me that a message I sent was not delivered because the addressee was not known, etc. I never sent a message to this person and have no clue who they are. How can this happen?" The sender has harvested your address from messages you have sent to various mailing lists, the same way the junk advertisers do with snail-mail. He may also be impersonating the supposed sender's address. "Am I correct in my belief that a virus could wipe out my C drive and the things on my D and E drive would be unharmed?" Maybe sometimes, but if the virus resides in memory it might not make any difference. "I know that I can reformat the C drive, which essentially erases everything on it, and it has no effect on the other drives. Is this a good way to keep your genealogy programs safe from viruses and worms? It might make these sleazy characters work harder, but the best thing you can do is to keep your antivirus definitions updated often, and NEVER open an attachment unless it is from someone you know and trust AND you know what it is and are expecting it. Dean No guru, but a born skeptic.