To answer the first question when you launch Address Book and you see nothing: by default you should see Apple's contact details unless it's been deleted. If it has it could well be empty. Try adding a contact, quit Address Book, then re-open to see if it is there.
Regarding Entourage. Sounds like you're using the option that Entourage remembers the last 200 emails used when entering the email address within a new email. It you haven't added the email to the address book it wont of created a new contact for you.
I don't think you can view this list as one document.