This report provides guidelines for Client Assistance Programs (CAPs), established to assist applicants and clients of programs and facilities funded under the Rehabilitation Act of 1973. This report developed out of a study to provide information to increase cooperative approaches of benefit to both programs and clients and to create training materials for CAP and rehabilitation program personnel. The first chapter looks at the history of CAPs with emphasis on provisions and implementation of the Rehabilitation Act of 1973. The second chapter presents a description of the CAP program within the rehabilitation system. Considered in the third chapter are CAP program implementation and the service delivery system. Included are definitions of types of CAP services, the CAP process, and systems advocacy services. Program results are reported in the fourth chapter which presents a summary of CAP appropriations and number of clients served, CAP case examples, and information on system changes and legal developments. Current practice issues are identified in Chapter V. These include: monitoring CAPs; evaluation standards; the appeals process; impartial hearing officer; CAPs funding level and resources; and use of systems advocacy. The final chapter gives guidelines for utilization of this document. Three appendices identify issues and study group members. Includes 16 references. (DB)