Create an input mask for a control

1. Open a form in Design view.
2. Select a text box or a combo box, and then click Properties on the toolbar to open the control's property sheet.
3. In the InputMask property box, do one of the following:

   Type the input mask definition.

   In a Microsoft Access database (.mdb), click the Build button in the InputMask property box to start the Input Mask Wizard, and then follow the instructions in the wizard dialog boxes.