This may be an older message, but worth sending around in case......

Do not open any message
with an attachment entitled 'POSTCARD FROM HALLMARK,'
regardless of who sent it to you. It is a virus which
opens A POSTCARD IMAGE, which 'burns' the whole hard
disc C of your computer. This virus will be received from
someone who has your e-mail address in his/her contact
list.
This is the reason why you need to send this e-mail to
all your contacts It is better to receive this message
25 times than to receive the virus and open it.

If you receive a mail called' POSTCARD,' even though sent
to you
by a friend, do not open it! Shut down your computer
immediately.

This is the worst virus announced by CNN. It has been
classified by
Microsoft as the most destructive virus ever. This virus
was discovered by
McAfee yesterday, and there is no repair yet for this
kind of virus.
This virus simply destroys the Zero Sector of the Hard
Disc, where the vital information is kept.

COPY THIS E-MAIL, AND SEND IT TO YOUR FRIENDS. REMEMBER:
IF YOU SEND
IT TO THEM, YOU WILL BENEFIT ALL OF US

Snopes lists all the names it could come in.
SNOPES verifies this

http://www.snopes.com/computer/virus/postcard.asp


Cardinal Joe