I am sure that your friends will have forwarded you this information already, or the company that you use for your PC maintenance and support, but in case you haven’t seen it there is a pretty virulent virus doing the rounds at the moment:

BIG VIRUS COMING!!! PLEASE READ & FORWARD!!!
http://www.snopes.com/computer/virus/postcard.asp

Hi All, I checked with Norton Anti-Virus, and they are gearing up for this
virus! This is the worst virus announced by CNN.
I checked Snopes (URL above), and it is for real !! Get this E-mail message
sent around to your contacts ASAP PLEASE FORWARD THIS WARNING AMONG FRIENDS,
FAMILY AND CONTACTS!
You should be alert during the next few days. 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.

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 informati on is kept.

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

Snopes lists all the names it could come in.

Spammers have long used the ‘card’ as a means of attracting your attention so as ever be extra vigilant!