One of the best antivirus softwares you can use.
avast! antivirus v4.8
represents a multi-award winning solution to virus protection, with
anti-spyware and anti-rootkit software built in for added security.
It is available free for non-commercial, home use and with its fast, automatic updates avast! antivirus is already being used by more
than 60 million users worldwide to provide continuous protection
against all forms of malicious software (malware).