PC Security

You don't need to pay money to be satisfied that your PC is free of viruses, trojans, spyware, and the like. There is free software that you can use to scan your PC and remove viruses, trojans, and spyware. Firewalls are also important to protect your PC from hackers gaining access to it.

Below are links to some very useful free software to help secure your PC.
ZoneAlarm - Free firewall for individual use.
Spybot-Search & Destroy - Detects and removes spyware.
AVG Free Advisor - Free anti-virus and anti-spyware program.
Ad-Aware 2007 - Anti-spyware program.
Trend Micro HouseCall - Free online virus and spyware scanner.
Panda Security - Scans and eliminates viruses, worms and trojans. Detects spyware, dialers, hacking tools, and security risks.

Note: Panda lists a file named KillIt.exe as a potentially unwanted tool. There is some debate about whether or not this file should be removed because it is added by HP in their products. It is usually installed in HP or Compaq computers and may cause problems if deleted.

Refer to the links below and you can decide if you want to keep the file KillIt.exe on your PC or not:
Killit.exe Malware, Spyware or Useful?
Discuss Killit.exe
Should I Remove Killit.exe From My HP Computer?
IT Resource Center Forums -Killit.exe
Lavasoft Support Forums - False Positives