On August 8, 2005, President George W. Bush signed the Energy Policy Act of 2005. This Act changed the time change dates for Daylight Saving Time in the U.S. Beginning in 2007, DST will begin on the second Sunday of March and end the first Sunday of November. The Secretary of Energy will report the impact of this change to Congress. Congress retains the right to revert the Daylight Saving Time back to the 2005 time schedule once the Department of Energy study is complete.
In order to deal with this MS has released some changes to the OS:
The hotfixes noted for the changes in daylight savings time here *make sure to read this* ( http://www.microsoft.com/windows/timezone/dst2007.mspx) are now available.
The hotfix to request is 924840
This is for Windows 2000,XP and 2003. Please note the final rollout dates:
"These updates are currently planned to be available for production deployment for all customer starting in November 2006 through Microsoft Customer Support Services (CSS), Windows Update, Automatic Update, WSUS, and the Microsoft Download Center."