I am sending this to the list hoping that Kipp and some of our other very computer savvy people will explain on the list in simple terms for us computer dummies the answers to these two questions. 1) 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? Keep in mind that as far as I know I have never had a virus or worm. I always have up-to-date virus protection and a firewall too. No scan has ever indicated that I have an infected file. 2) My computer has more than one hard drive. Most things (email, downloads, etc.) come in through my C drive. I keep my genealogy programs on my E drive. I keep my pictures and documents on my D drive. I had it set up this way in the hopes that my genealogy programs would be better protected from viruses and worms. 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? 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? Kipp and others please remember that many people on this list do not even understand what I am talking about when I say I have more than one hard drive on my computer. I am wondering in this era of nearly daily attacks from worms and viruses, it might not be a good idea for us genealogist types to put our programs on a different drive from their C drive. Thanks for letting us pick your brains. Bette