I myself also scan with norton, and have enjoyed it. although, I do have a cousin that prfers to run "botnets" (the basis of the mirc trojans) and I get ahead of the virus alerts. He notifies me of the infection process, as well as how to detect if you are infected. In most cases, blocking the virii on your computer is as simple as setting a password to your "Administrator" account on your computer. They all use a form of the net.exe exploit, and ipc$ hack. "Execut arbitrary code" as is said my Microsoft. >:D