From the Kenosha News on 3-4-07

Check if your computer is ready for the new daylight saving time

       My February 18 article explained the issues related to the new daylight saving time.  Since then, I’ve gotten a few inquiries asking how important this is, what it affects, and how they can tell if their computer is updated and ready for the change. 

       In general, this isn’t something to worry or panic about.  Your computer won’t refuse to boot or fail to run programs because of a time change issue.  If you’re using a calendar program or something else that is time-sensitive, it will be off by one hour for three weeks from March 11 until April 1.  Also, anything that happens on a schedule – like updating your virus definitions or downloading Windows updates – will happen an hour earlier because your computer won’t have “sprung ahead” yet.  Note that there is a special tool to update calendars in MS Outlook.  Go to and search for “time zone update tool.” 

       If you have a web-based e-mail service, like Yahoo, AOL, gmail, or hotmail, your messages should be stamped with the correct time from their server.  If you use Outlook, Microsoft says that “if your time zone isn't kept up to date—even if your clock is set correctly on your computer—the time stamps on e-mail messages you send will be wrong.”  If you use Outlook, Outlook Express, or another POP client, you should update your computer.
       If you want to know for sure that your Windows XP computer is ready for the change, it’s fairly easy to do:

  1. Click Start and click Control Panel
  2. Double-click the Security Center
  3. On the left, click on the link for "Check for latest updates."  This will connect you with a Microsoft web site.
  4. On the left, click on the link for "Review your update history"
  5. Look through the various screens for an update with the number KB931836. Mine loaded on Sunday, February 18. The update has been available since 2/7/07, so you need look no further than that.  If you have this item, your computer is ready.

       If you do not have that update and you don't want to download all of the recommended updates, get just that update using the link for Windows XP shown below.  Walk through the download and installation instructions.

       You may also choose to wait until Sunday, March 11 and see if your time changes automatically.  If not, does anything work incorrectly because of the time change?  You can go in to your time settings and correct your time manually.  However, if you’re using internet time (NTP), the next time it does an update, it will “uncorrect” your change.  One option would be to leave the time wrong for three weeks.  The other option would be get the necessary update and install it:

  • Windows XP - - Note that you must have Service Pack 2 in order to get any updates for Windows XP.
  • Windows  98, ME, or 2000 -
  • Mac OSX 10.4 - - Click the Support tab, and search for “DST update.”

by Carol Sabbar from the Kenosha News on 3-4-07