I've been receiving these kinds of messages for several weeks now. I think I've received all that was mentioned above (probably even more). I just delete them. First of all, if it's an e-mail from an address I don't recognize and it has an attachment, I just delete it. Second, if the message is just a general text without directly addressing me and without a signature, poof - out it goes. Oh yeah, another kind I've received asks me if I'm a spammer and tells me that my address was found on some spammers' list... It seems that these newer virus messages try to make you concerned or interested enough to check out their attachment.