Trojan:Win32/Startpage.IP

Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as Microsoft Security Essentials, or the Microsoft Safety Scanner. For more information about using antivirus software, see http://www.microsoft.com/security/antivirus/av.aspx.

This threat may make lasting changes to a computer’s configuration that are NOT restored by detecting and removing this threat. For more information on returning an infected computer to its pre-infected state, please see the following article/s: 

• Changing your Internet Explorer Home Page:
• For Windows 7: http://windows.microsoft.com/en-us/windows7/Change-your-Internet-Explorer-home-page
• For Internet Explorer 7 and 8 in Windows Vista: http://windows.microsoft.com/en-US/windows-vista/Change-your-Internet-Explorer-home-page 
• For Internet Explorer 6: http://support.microsoft.com/kb/252464 
• For other support and help related articles, go to:
• Windows 7: http://support.microsoft.com/gp/windows7
• Windows Vista: http://support.microsoft.com/ph/11732 
• Windows XP: http://support.microsoft.com/ph/1173
• Microsoft Security TechNet Center: http://technet.microsoft.com/security/default.aspx