Daylight Savings is not Saving Time
In 2005 the federal government pass the US Energy Policy Act of 2005 that changed the dates on Daylight Savings time in an attempt to provide more daylight time and reduce the costs of energy. It's a great thing if you hate the long darkness of winter, but it's a bad thing if you administer Windows operating systems that are out of the mainstream support with Microsoft.
For users of Windows 2000 and below, making the DST change was going to involve some clever hacking becuase the much-needed patches from Microsoft weren't likely to arrive...
However, Microsoft recently changed their policy on non-supported software and announced a nominal $4000(!) fee for the set of patches that would fix DST for that software. If you're running Windows 2000 or below, you may need to pony up as the DST problem doesn't affect only Windows. It also affects these software packages as well:
Microsoft Windows
Microsoft Windows SharePoint Services
Microsoft Exchange Server
Microsoft Office Outlook
Microsoft Office Live Meeting
Microsoft Dynamics CRM
Microsoft SQL Server Notification Services
Microsoft Entourage
Check out this link for more information on supporting the DST changes on the Windows O/S. Scroll down a little for additional information on the other non-O/S software and supportability. Good luck with it.
http://support.microsoft.com/gp/dst_topissues#a5
If you've figured out a hack that'll prevent the need to spend the $4000 and want to share, drop it in a comment below. We'd love to hear about it!