outlook modify appointment

Could someone post example code to modify the timezone of (the recurrence
pattern) of appointments in outlook calendars which are on an exchange 5.5
server using Delphi 6?

Recurring meetings are now in Outlook like this:
Vindt plaats elke dinsdag vanaf 02-07-2002 van 14:00 tot 15:30 (GMT+01:00)
Amsterdam, Berlijn, Bern, Rome, Stockholm, Wenen.

Thanks in advance,