If you have a domain controller in your home/business, then on that domain you will have an account in your user admininstration tool. That will have a user profile path that will store your roaming profile.
One thing to take note - when you set up your Outlook profile, look in the Mail applet in Control Panel and see what your Outlook Profile is called. Usually it is called Outlook by default. If you want this to work properly if you have more than one user in the family/business is to have unique outlook profile names so not everyone has a profile called 'Outlook'.
Cant put my finger on the article but I remember reading it due to lots of outlook/profile related issues for users and this seemed to sort it.