WinAntiVirus Pro 2007 Descriptions:

WinAntiVirus Pro 2007, also known as WinFixer or WinAntiVirus Pro 2006 previously, is a counterfeit anti-spyware software that causes unspeakable nightmares for computer users. WinAntiVirus Pro 2007 usually installed itself onto your PC without your permission, through Trojan and virus. WinAntiVirus Pro 2007 will greatly degrade the performance, generate system errors, display fake system alerts or fake security alerts to trick user to buy the Paid Version of WinAntiVirus Pro 2007. (If your homepage is hijacked, your browser might redirect you to winantivirus .com) (New variant is also known as Trojan.Win32)

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Source: http://www.xp-vista.com/spyware-removal/winantivirus-pro-2007-removal-instructions