http://www.symantec.com/avcenter/  the Symantec advice site.
http://housecall.antivirus.com/housecall/start_corp.asp    Housecall will check your computer for viruses.
http://www3.ca.com/virus/encyclopedia.asp     The virus encyclopaedia.
http://www.sarc.com/     Go here to learn the latest virus threats and risk.
http://members.aol.com/don5408/fprot.html     F-PROT. Free anti-virus programme.
http://www.antivirus.cai.com/update.htm    InoculateIt update page.
http://www.grisoft.com/html/us_index.html    AVG. Free anti-virus programme.
http://www.gfi.com/emailsecuritytest/    Test the security of your current defences.
http://www.zonelabs.com/zonealarm.htm    ZoneAlarm.Free firewall – you need it!