Outlook 2000 How to Share Contacts and Email Between Outlook Profiles

If any one can help, I have a customer who has multiple outlook profiles. one for home, and one for office. I just setup a new one for his dialup account. He tells me that when he works with his home or office profile the email and contacts are shared so that no matter what profile he logs on as he has all his contacts and email. My question is how do I make the dialup profile do this.

Thanks