Ken,
By definition, the Currency data type stores four decimal places. You cannot get it to store more or fewer decimal places than that, although you can change how Access displays those values.
BTW, the property you were adjusting for number of decimal places is relevant for displaying data only, and has no impact on how Access actually stores the data.
None of the native Access data types allow you to specify the number of decimal places that are actually stored. If you want that capability, you must go to a server-based RDBMS such as SQL Server, Oracle, MySQL, etc.
Patrick