Creates a drop-down list box on a data access page. A drop-down list box looks like a combo box on a form, but unlike in a combo box, you cannot type new values in a drop-down list box. In a bound drop-down list box, the value you select is inserted in the field that the drop-down list is bound to. In an unbound drop-down list box, you can store a value that you can use with another control or find a record based on the value you select in the drop-down list box.