XP Antivirus Pro 2010 (XPAntivirus Pro 2010) trickery includes the following: several websites marketing XP Antivirus Pro 2010 software and providing downloading links for its shareware;  fake online scanners; browser hijacker that redirect web-surfing of user running infected browser to one of XP Antivirus Pro 2010 websites; XP Antivirus Pro 2010 trialware; [...]

Source: http://hands-oncorp.com/2010/01/30/xp-antivirus-pro-2010-removal-instructions/