The “Fall Back” of the daylight saving time (DST) change in 2007, as mandated by the Energy Savings Act of 2005, will go into effect on November 4th. As was the case during the first transition in March, Microsoft is working closely with customers, partners and others in the industry to help ensure a smooth and seamless transition. In general, computer systems should be updated to reflect the new DST rules. For most customers, this means applying software patches to select Microsoft products, including various releases of the Microsoft Windows operating systems and servers, Microsoft Office and other applications.
General Product Updates and Guidance for Microsoft products can be found at: http://support.microsoft.com/gp/dst_topissues#a6, derived from the internal and customer-ready product matrix at: http://team/sites/dst2007/public.