This document describes the development and implementation of a computer based registration and scheduling information system at Northern Illinois University. Because of personnel shortages, the University sought and received help from commercial computer firms. Implementation of scheduling, registration, and billing systems was accomplished in a relatively short period of time, and the few bugs were eliminated quickly. The report describes in some detail the five registration modules: (1) transaction input module, (2) course schedule maintenance, (3) course request, (4) scheduling module, and (5) add/drop module. (RA)