Hi,
If you are looking at customizing the fields for a Product, then Business
Contact Manager does not support customization of its forms.
However, if you are looking at having your own Products data in the Product
Master list, you can do so by using the "Add" and the "Edit" buttons. For
more details on the Products List, please visit: http://office.microsoft.com/en-us/assistance/HP010445491033.aspx