Default time for “all day” events

Hi,
My Palm 515 keeps waking me (even worse, my wife) each time an all date event has been stored. Most of these all day events are a product of my department’s calendar and are imported via MS Outlook.
Is there a way to either force a “No Alam” specification on all days events or of setting the alarm to a more convenient time, let’s say at noon?

Ran