I don't know if you are talking about a computerized handicap system or not. The handicap systems that I am familiar with require that you always post the gross score. You may have to enter to course par and the slope so that it will calculate correctly. All of the courses here in the Chicago area are already loaded into the software, so you pick your course, pick the tees you played from, enter your gross score and the system calculates your handicap for you.