I own a different E-Machine and I can't find the place where on earth I can install the Product Key for Outlook Express 2003

I found the window earlier but I can't find it immediately. Can anybody help me?

Answer:
you dont involve any product key for outlook 2003 the is for department 2003 only.
I don't presume you need a product switch for "outlook express". But for outlook, all you should enjoy to do is open outlook and run to the "help" tab. It should have an odds for activating the program.