Last week Microsoft has released a great tool for all helpdesk professionals and system administrators called "Change Analysis Diagnostic" which is intended to track changes in your operating system.

A help-desk engineer can specify a date range and the program returns an XML report with the changes made to the OS components, installed software, BHO (browser COM objects), ActiveX controls and many more. Learn more at http://support.microsoft.com/kb/924732 . This tool could be a very nice addition to our help-desk software.