Spam contenant virus !

Bonjour, je viens vous présenter un e-mail que j'ai recu aujourd'hui :

customercare@walmart.com +Ajouter aux contacts
À :
labidi_@yahoo.fr [qui n'est pas mon adresse !!)
Objet :
Confirmation for Order Z3566043
Pièces jointes :
Analyse anti-virus
Z3566043.zip (56,1 Ko)


Dear Customer,

Thank you for shopping at our shop !
This e-mail is to inform you that your order has been shipped out.
The following information is for your reference (see details in the attachment):
* Order No.: Z3566043
* Order Date: 08/13/2006
------------------------------
SUBTOTAL : $1,769.99
SALESTAX : $0.00
SHIPPING : $16.81
TOTAL : $1,786.80
------------------------------
* Ship Via: FDX Overnight Delivery

[Ship Date :] 08/14/2006 [Tracking No:] 708745655472
Please note that if your order includes more than one package, the
packages may not be delivered at the same time due to the shipping carrier's
schedule and the delivery method, and this is out of our control.
In addition, backordered items will be shipped separately.
You may check the status of your package's progress at our website.
Simply click on "Customer Service", then log into the "Member Center".
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Customers who leave comments for us at either ResellerRatings.com or
Pricegrabber will be eligible to receive a flash drive or other
cool prize! FOUR drawings will take place every month -- one drawing
from each review site on the 1st and the 15th of every calendar month.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Thank you for shopping with us!
15% restocking fee applies to all refunds. All products must be
returned in like-new condition, including original packaging and
all documentation and accessories. Charges will be applied for all
missing accessories or parts.
Our shop will not accept items that have been physically damaged or
misused. Return periods for different product categories range from
zero to 30 days.


**************************************************
Alors voila me doutant du spam, je n'ai pas autoriser le téléchargement de la pièce jointe, qui semble-t-il contient le virus : BKDR_HAXDOOR.IE.

Voila alors ce post juste pour prévenir les internautes de na pas ouvrir ce mail, mais aussi pour vous poser deux petites questions :

Quest-ce que ce virus ?
Et bien entendu, la commande est fictive, n'est qu'un simple prétexte pouur me fair ouvrir le fichier .zip, je de doit pas payer la somme demandée pour ce que je n'ai pas commander ??
Merci a vous !