Encrypted Email

I just received a rather amusing virus. It claimed to be an encrypted email from AOL, in the form of a .zip attachment. I was told to keep it in a safe place. The amusing part was that in the body of the email, they included a user name and password with which to unlock the file. As if both were needed to unlock a zip file (AFAIK, only passwords are used to lock zip files), and that you would send that in plain-text. It’s the email equivalent of mailing a lock box with the key taped to its side.