The Microsoft Windows Evil Software Removal Tool checks Windows XP, Windows 2000, and Windows Server 2003 PCs for helping remove infections by precise, prevalent malignant softwareincluding Blaster, Sasser, and Mydoom. When the detection and removal process is complete, the tool displays a dispatch describing the outcome, including which, if any, malicious software was detected and removed. The tool creates a log file named mrt.log in the %WINDIR%debug folder.
Note The version of this tool delivered by Windows Update runs on your personal computer once a month, in the background. If an infection is found, the tool will display a standing report the following time you start your PC. If you want to run this tool more than once a month, run the version that is available from this Net page or use the version on the Malignant Software Removal Tool site.
Although its quite a short post, thank you for providing the basic information on the Removal Tool.