A computerized program for children and adolescents with insulin dependent diabetes mellitus (IDDM) and their parents has been developed. Our program consists of computed assisted education, of aid to routine insulin dosage self adjustment and of records of home and hospital controls. Technically it has been implemented in DBIII plus: it runs on IBM PC computers (and compatible computers) and MS DOS (version 3.0 and later). Computed assisted education consists of 80 multiples choice questions divided in 2 parts: the first concerns basic informations about diabetes while the second one behavioral attitudes of patient in particular situations. Explanations are displayed after every question, apart from correct of incorrect choice. Help for self-adjustment of routine insulin dosage is offered in the third part. Finally daily home urine and/or blood controls and results of hospital admissions are stored in a database.