Win Xp Pro;  Outlook 2003 SP2;  Win Mobile Smartphone 2003;  ActiveSync 4.5

When I edit a contact, Outlook duplicates the dates, ie anniversary and
birthday, which are "auto entered" into the calendar.  It also activates the
reminder sound option on the new event created.

I believe (but not verified) that it has something to do with my
synchronisation with Windows Smartphone.

How do I:
1. stop the auto-entry of the anniversary and birthdates?
2. if I cannot stop the auto-entry, then how do I stop the reminder sound
option from being activated?

I know I can use a duplicate remover and manually turn off the reminder
option, but I want to obviate the need for manual intervention.

Thanks.