I have a new Dell Computer that has Microsoft Office 2007 installed on it.  
For the most part, I like the program and it does what I want but there is
one very annoying problem I have.  I use the calendar feature often and
always set up appointments by time and day and like to get visual reminders
when my appointments are due or coming up.  I set the reminder time to when I
want (i.e. 15 minutes before the appointment time) but those reminders never
come up on my computer screen like they are supposed to.  I have tried
everything I can think of and hope it is a simple setting or "check-box" that
I am missing but I am stuck.  Can anyone help me out?