Systems and methods are provided for personalizing software programs in a computer system. In accordance with one implementation, default values for personalization data adapted to or harmonized with the individual needs or preferences of the end-user are provided to a plurality of end-users at start-up of a program. Further, two personalization levels are provided, including a first personalization level containing administrative personalization data which can be set by a system administrator, and a second personalization level containing individual personalization data, which can be set by the end-user. A data filing system for this personalization data may be of a hierarchical structure.