Heres the link on snopes to check it out.
http://www.snopes.com/computer/virus/postcard.asp
PLEASE SEND THIS TO EVERYONE ON YOUR CONTACT LIST!!
A new virus has just been discovered that has been classified by Microsoft as the most destructive ever. This virus was discovered yesterday afternoon by McAfee . This virus simply destroys Sector Zero from the hard disk, where vital information for its functioning are stored. This virus acts in the following manner:
It sends itself automatically to all contacts on your list w ith the title:
'You've received a Post Card from a Family member'.
As soon as the supposed virtual card is opened the computer freezes so that the user has to reboot. When the ctrl+alt+ del keys or the reset button are pressed, the virus destroys Sector Zero, t hus permanently destroying the hard disk. Yesterday in just a few hours this virus caused panic in New York , according to news broadcast by CNN.
This alert was received by an employee of Microsoft itself.
So don't open any mails with subject: 'A Post Card from ' As soon as you get the mail, delete it !! Even if you know the sender !!!
Please pass this mail to all of your friends.
Forward thi s to everyone in your address book. I'm sure most people, like myself, would rather receive this notice 25 times than not at All