This program is intended for detection and removal from system of various harmful or simply undesirable modules - programs-spies, the programs tracing the Internet-preference, adding the emerging advertising windows, making not authorized changes in the Internet-adjustment, etc.. Microsoft Windows Defender is intended for work in Windows Server 2003 Service Pack 1 and Windows XP Service Pack 2
Link - http://download.microsoft.com/download/d/d/1/dd1f1a75-92ac-4e7e-8584-8806730d6114/WindowsDefender.msi