I have AntiVirus, Firewall and Spyware programs installed and running on my computers and I am thinking of further defence layers. I use the Internet for about 4 hours/day on average and receive about 100-200 e-mails/week on a dial-up connection(soon to be a continuous cable connection). Would I be better off choosing an AntiTrojan barrier(BoClean or Trojan Hunter)? or a Worm/Script Defender(WormGuard)? I have KAV as my antivirus program which is supposedly very good at Antitrojan detection. Ideally I would choose both but at the present time I wish to select only one of these alternatives?