TZmove not working in OfficeXP

I have Office XP Pro running on most of my machines. When the update for DST
was loaded, the calendars in the last week of April and October changed by
one hour. I went to the Microsoft site for the fix, tzmove.exe, which I have
been using. If there is any calendar events off in Office 2003, the tzmove
fixes them. If there are any problems in Office XP Pro, the tzmove will say
that there are no issues and nothing is moved. Is there some other way to
move the calendar events (on each machine), other than manually?