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Correction: According to KB914387, only Windows Vista uses Dynamic DST. So, a lot of the entries in the registry settings provided by M$ don't apply to Windows 2000 (including the two year limitation mentioned in an article I found on Google). Stefan John Ozminski writes: > Following the leads in previous emails, I looked up some more specific > information. > > The Knowledge Base article http://support.microsoft.com/kb/914387/en-us > mentions the Time Zone Editor, and tzedit.exe, but it does not mention > that the tool is a resource kit tool. The Time Zone Editor is in the > Windows 2000 Resource Kit. It is available as a separate download at > http://support.microsoft.com/kb/927229 > > The Time Zone Editor will help you manually make the necessary edits to a > time zone as Brian Hoort mentioned, but one time zone at a time. > > At least one article suggested you might want to update time zone > information for more than your local time zone in case applications make > calculations related to other time zones. > > I found one third party tool at http://www.intelliadmin.com/Downloads.htm > The download file is DaylightSavingFix.exe. The notes on the website > implied that they just apply the registy settings documented by Microsoft, > limiting the updates to US time zones. I don't know if this is the same > tool that Brian mentioned or not. The tool is very small (751k). If you > run it interactively, the dialog unobtrusively advertises other > IntelliAdmin tools. I ran a quick test, and it updated the registry as I > expected. If it mucked around with anything else, it did it very quickly > (on my slow computer, 500Mhz). They provide silent install and uninstall > with the commandline options /qinstall and /quninstall. The uninstall > option restores standard (US TZ) Windows 2000 registry settings, not > settings made by tzedit.exe that were already in the registry at the time > the daylightsavingfix.exe tool was run. > > I also noticed in the article KB914387 that the Microsoft registry update > uses Dynamic DST and only covers 2006 and 2007 for EST. Another article I > saw said Windows, including Vista, only handles Dynamic DST for two years, > which means any Windows 2000 machines that haven't retired by 2008 will > need to have their TZ registry settings updated again. > > The DaylightSavingFix.exe tool does not use Dynamic DST (and TZedit.exe > can't modify Dynamic DST settings). The registry settings made by > DaylightSavingFix.exe would also apply to 2008, as long as the DST start > is still the second Sunday in March and the end is the first Sunday in > November. > > -Stefan > > Stefan Ozminski > Computer Services > W.K. Kellogg Biological Station > Michigan State University > 199-4427 (from campus) > >