If you have emails that were generated from the infection, then you can view the headers to see who the actual sender was. I believe in Outlook express you can right click on an e-mail and select properties then select the details tab to view the headers. The actual sender of a klez virus will be listed in the return path.
Electricity is actually made up of extremely tiny particles called electrons, that you cannot see with the naked eye unless you have been drinking.
Quote taken from Dave Barry
Bill.