<qa>  What is the goal of the web-based computer system?Obesity and physical inactivity have become serious problems for individuals with mental illness, resulting in increased rates of chronic disease, premature death, and substantial health care costs. Although in-person psychoeducational interventions help individuals with mental illness manage their weight, these interventions are often not used because they require frequent travel to treatment programs and substantial time from clinicians. This project addresses these barriers by developing and evaluating the effectiveness of an web-based computer system that is focused on diet and exercise education, and designed to help individuals with mental illness manage their weight. 