A little late maybe, but Id just like to pass on a simple method for preventing viruses/vira from spreading through address books in e-mail clients such as Outlook Express. In your address book, create a new contact. Call it "000" with e-mail address "000". It will automatically go on top of your lists of contacts, and if your e-mail program ever attempts to send out batch e-mails to everyone on your contact list, you will get an error message about an invalid recipient. That way you will know that something suspicious is going on :) If everybody did this, we would never have problems with repeated virus infected mesages from the same sender, as mentioned above. It could only happen once, then the sender would be aware.