The computerization of any manual system must be carefully planned before a computer system is selected. An adequate record-keeping system must exist before conversion to a computerized system takes place. Once selected, the computer vendor must be able to provide what the customer requires. More importantly, the computer vendor must be able to provide support services after the system is implemented. User capabilities and acceptance must be considered, and each step of the implementation phase must be thoroughly communicated to all who will be affected. Finally, to provide the most accurate real-time information, files must be maintained and updated as changes occur.