I am regularly receiving an email, which has a virus attached.

DO NOT OPEN THE ATTACHMENT!!!

From: Hahaha
Subject: Snowhite and the Seven Dwarfs - The REAL story!

The attachment is Joke.exe!

This virus infected my computer about 12 months ago and deletes Windows system files bit by bit.

When you double click the attachment it runs the exe file in the background without you even knowing and your computer will start to "hang" and even become inaccessable.

Luckily, I remembered this well and delete it every time it rears its ugly head!

The virus replicates itself and the user has no way of knowing that they are infected (until their computer starts to malfunction ) or that they are forwarding this virus.