Background: Obesity has reached epidemic proportions, and often has serious adverse health consequences. The VA has deployed a "MOVE! Weight Management Program" nationally in the general patient population. Since individuals with serious mental illness (SMI) often have cognitive deficits, specialized psychoeducational interventions are needed in this population. Specialized psychoeducational interventions for weight have been developed and studied in populations with SMI. This evidence-based practice has been adapted for use in VA, resulting in a "MOVE! SMI" intervention. However, it has proven to be quite difficult to disseminate this intervention. Patients with SMI often have limited transportation options, and may not want to participate in groups. Also, in-person MOVE! SMI requires substantial time from mental health clinicians. This clinician time has been difficult to deploy or is not available at many clinic locations. It is likely that these barriers can be addressed with a computerized, web-based version of MOVE! . Specialized web-based approaches have been studied and found to be successful in people with SMI, and can deliver content that is intensive and engaging with minimal requirements for staff time.