To help provide the answers to these questions, we have a DST site you can use.  Here is the Q&A on this:

Q:  I’ve heard something about Daylight Savings Time updates or DST 2007?  What do I need to know?

A:  In August of 2005 the United States Congress passed the Energy Policy Act, which changes the dates of both the start and end of daylight saving time (DST). Updates to several Microsoft products are required to fully implement this change on an SBS Server.  Full details on the updates required are available at http://www.microsoft.com/windows/timezone/dst2007.mspx  At this time there are no unique SBS 2003 updates required, although there are updates required to several SBS components (windows Server, Exchange Server, Outlook 2003, Windows SharePoint Services).  Please follow the detailed instructions at http://www.microsoft.com/windows/timezone/dst2007.mspx

Thank you and have a wonderful day,

Eric Ligman
Microsoft US Senior Manager
Small Business Community Engagement
This posting is provided "AS IS" with no warranties, and confers no rights