Can you explain in a little more detail of how one infected computer can spread a virus through the Internet to another computer that has an antivirus? I am trying to understand what you are thinking because I am clearly not seeing something that you are seeing. What I'm asking for is something like "The infected computers sends out email with a virus." (That example holds no weight because the target computer would have an antivirus.) I cannot think of a single case where one infected computer can infect a typical computer with a standard firewall via the Internet.