Can I set my Outlook time to 12hour even if my computer is set to 24hour?

So I have my windows clock set to 24 hour, because I prefer 24 hour time, but I need to have my Outlook clock (especially the calendar) display in 12 hour time, because I print out schedules for my boss who prefers 12 hour time.

For the record, I’m using Outlook 2007.

Is this possible in any way..?

Thanks in advance for your help!