[Triumvir Emphy]

Most of those viruses use a few silly ways to get Users. A lot of people hide their extensions and leave scripting on in outlook.
Next time you get an attachment make sure it really is a player1.txt or a player1.plr and not a player1.txt.vbs or a player1.plr.exe.

Don't accept exe files make them zip it. Don't accept signature attachments, and don't use them yourself.

Get a yahoo or hotmail account and use the web interface to get mail.