Virus

AVG Free

AVG is the Number 1 Free Antivirus choice.
Virus and Spyware protection, Safe web surfing, link checking,
spyware protection, Phishing and E-Mail scam blocking

AVG removal tool

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Avira

AntiSam
AntiSpyware
FireWall
Email protection
Award winning malware protection

avast
FREE avast! antivirus 4.x Home Edition,
anti-spyware & anti-rootkit for Windows

HijackThis

Free Trojan Horse remover

Click here to go read and download