Introduction
It is very important that you keep updated virus and spyware scanning software on your PC at all times. There are so many viruses, spyware, and adware going around the Internet that chances are, your PC has some form of unwanted program if it is connected to the Internet. You may think that there is nothing wrong, but one look at your process list will show differently. Windows XP Users can access this list using Ctrl + Alt + Delete to summon the Windows Task Manager, then clicking the Processes tab.
What should be done?
The first step you should take in safeguarding your computer is purchasing some Virus Scanning software. Notice that I said purchase. Software is only good if it is clean. By that I mean if you download a “free” virus scanner, it may end up having some viruses or Trojan horses included. By contrast, however, paid software is guaranteed to work well, with no viruses in sight. Most paid software also comes with a CD, so if something happens to your computer, you can always install the software again. Support is often included in these software packages, and are usually paid on a yearly basis.
Recommended Software
I have purchased the following software, and I can tell you that they work great against the fight with viruses and other unwanted programs.
Webroot's Spy Sweeper - http://www.webroot.com/consumer/products/spysweeperwithantivirus/
Trend Micro Antivirus - http://www.trendmicro.com/en/products/desktop/pc-cillin/evaluate/overview.htm
Conclusion
The software packages listed above are extremely effective, and I highly recommend you try them out. However, there are other solutions out on the Internet, and you might have to shop around to find the appropriate solution that fits your needs.