Yes, I've spent the weekend ridding my computer of a virus. What
happens is it gets onto your hard drive and attaches itself to certain
programs, then when you send an email to someone, it sends another
email with an attachment to the same person. So everyone I emailed
this last week may have had another email with the virus sent to them.
As long as you do not open the attachment you are O.K., but be sure to
delete it...then also delete it from your deleted folder.
Fortunately, it doesn't do any permanent damage to your hard drive, as
long as you use a virus program to eradicate it in good time.