Where can I find information about viruses?

The Symantec website contains full details of all the viruses ever discovered. It provides a summary of the risk, the risk level and technical details. http://www.symantec.com/norton/security_response/threatexplorer/azlisting.jsp

The Kaspersky website contains the latest malware descriptions. http://www.viruslist.com/en/viruses/encyclopedia

You can sign up on Symantec to receive an email alert when there is a serious internet security threat. http://nct.symantecstore.com/0184/security_alert.html