Office challenge: How can I change Outlook's default contact folder?

In this week's challenge, Outlook users ask for the near impossible when it comes to contact management; can you meet their demand?

Some of your users don't store their contacts in Outlook's default Contacts folder and they'd like Outlook to default to their folder, not Contacts. Can you help them? Remember, you can't always give clients exactly what they want. What else might you offer?