For those of you who do not have an "anti-virus" program running on your PC here is a location at Symantec the makers of Norton Anti-Virus software where you can run a "free" virus check on your PC.
http://security.norton.com/default.asp?langid=us&venid=sym
Just click on the link above and then select "Scan for Viruses". This program requires that "Java" is enabled on your PC and you will need to download about 1.5Mb to run this program.
Jim