Regarding Pacific Time Zone issue. Does this mean I need to do this reg hack on all machines in Pacific Time zone whether I run Exchange too or Outlook too.?
A time zone may be ambiguous
Recurring calendar items that are created by using DST 2006 rules in the Pacific (PST) time zone in Outlook 2003 or in an earlier version of Outlook are not updated by the Outlook tool. This problem affects MSEXTMZ.exe because MSEXTMZ.exe runs the Outlook tool.
To work around this issue, change the registry to remove the Mexican time zones on the computer that is running MSEXTMZ.exe. Run MSEXTMZCFG.exe in Update mode, and then restore the Mexican time zones in the registry. To do this, follow these steps.