It’s antivirus software Jim but not as we know it. This one is quite sort of weak and mild in terms of what it can do for you. I tested it a while back as my machine had over 1500 viruses, don't even start to ask me how. Needless to say it involved a single starting virus, a website, a large download and a hell of a lot of bother. One interesting thing out ofthat was the fact that Command only picked-up about 60% of those viruses. And the worrying thing is that I had the latest update at the time, so no excuses there. Dissappointing all 'round really. Not recommended at all.