Announcement: Microsoft Windows May 2010 Updates to Daylight Saving Time and Time Zoneshttp://blogs.msdn.com/b/mthree/archive/2010/06/01/dst-2010-05.aspxCheck out Microsoft Knowledge Base Article 981793 , "May 2010 cumulative time zone update for Microsoft Windows operating systems", which the Windows team just posted.  Changes / updates from the previous cumulative Windows time zone updateen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)