A computer aided dispatch apparatus including a a first memory portion, a second memory portion, and a third memory portion. The computer aided dispatch apparatus also includes a display 510, 626 with a first display segment 530. The first display segment includes a digitized representation of a selected geographical area 530, street data, and a user locatable mark 520. The user locatable mark 520 defines a mobile unit position for a mobile unit based upon a first value and a second value. The computer aided dispatch apparatus includes a dispatch system 811 operably coupled to the display 510, 626. The dispatch system includes order data from customers. A portion of the order data is transferred from a data acquisition device 801, 808 to the mobile unit 610.