SharePoint Products and Technologies and DST: Daylight Savings Time Update
With the upcoming changes to DST in the US, those of you who have SPS 2003 or WSS 2.0 deployed should read this. "Preparing for daylight saving time changes in 2007" includes a list of Microsoft products and describes the change. WSS 3.0 has no change and hence SharePoint Server 2007 has no change.
Since SPS 2003 is based on WSS v2 platform then it gets DST from WSS so WSS v2 and SPS 2003 customers would need to install the update, http://support.microsoft.com/kb/924881. The update has other fixes in it, but the DST update is the updated timezone.xml file and is included in the update.