Panda: http://www.pandasecurity.com/resources/sop/UNINSTALLER_08.exe
Symantec (Norton): ftp://ftp.symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool.exe
Trend Micro: http://esupport.trendmicro.com/support/viewxml.do?ContentID=EN-1037161 Webroot: http://support.webroot.com/cgi-bin/webroot.cfg/php/enduser/std_adp.php?p_faqid=1761 Zone Alarm: http://server.iad.liveperson.net/hc/s-28464961/cmd/kbresource/kb-7016203058973811903