In corporate practice the condition of success is that leaders must be aware of the value of human capital. The target of our theoretical research was to identify expectations that we can create against managers, who want to realize the development and successful operation of Knowledge Management System (KMS). We composed some questions that we answered in the study. The phases of our research: We looked over and summarized expectations generally valid in leading work and expectations, which are waiting for the realization as the elements of KMS, We selected expectations and identified the common areas in consideration of principal expectations that managers have to accomplish, We summarized the relations among principal features succeed in the following fields: satisfaction - emotional intelligence (EQ) - elements of Knowledge Management (KM), EQ - managing competence - elements of KM. We drafted the direction of change and things that managers have to do to make KMS work successful. The result of our theoretically research will be expanded to practical field, the managerial practice will be measured, tested, compared against the drafted expectations and with the extent of their fulfilment. We will give an account of the practical results in a following study. © Andrea Bencsik, Krisztina Bognár, 2007.