>I need to create an hour spinner class that displays the hour portion of a datetime field with am and pm as part of the spinner. Does anyone have any ideas on how to do this?

Check out:
file#647 "Entering time using a spinner"
file#538 "Time Spinner "
file#418 "Time entry class "
file#9430 "Time Entry TextBox Class" (not a spinner but probably still useful)

All are in the "classes" section.