Maintaining networked computer systems, it is only a matter of time before you end up dealing with a virus. Of course really these days it is increasingly rare that anyone seems to get just one virus. It starts with one, but many viruses plant themselves on your computer and commence to download other viruses, trojans, spyware, and other types of malware onto your computer. However, what is truly disturbing is that those that are writing the viruses seem to be finding more and more vectors to your computer.