The box says which edition it is. You can also verify through one of the
following methods
a) open Automator and see if there are any workflows for the Office
applications
b) open Entourage, go to Tools>Accounts and see if you can create an
Exchange account
If none of the options I've just listed work, you have the Home & Student
edition, and the solution below is not going to work.
Step 1: Create a workflow or an application in Automator that contains the
following steps, in this order: Create New Entourage Mail Message -> Send
Outgoing Entourage Mail Messages. Fill in the necessary details, such as the
recipients, the text body and the subject line, then save the
workflow/application.
Step 2: Create an event (recurring or non-recurring) in iCal that takes
place on the 1st of each month. I do not know if you need to send the same
message each month, but if that is the case, you ought to create a recurring
event, i.e. an event that repeats itself automatically on the first day of
each month. To do that, click on Repeat, Custom, and choose Frequency:
Monthly, Every 1 Month(s), Each 1. Click OK, then create an alarm that
triggers the action Open File. Choose the Automator workflow/application you
have just created, and that should be it.
If anything's unclear, post back. Keep in mind that if you have the Home &
Student edition, you could still set up a similar solution using Mail
instead of Entourage.