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Due to the rapid and independent developments of systems, heterogeneity has become a common feature of current networks. In order to harmonize two different networks and close the gap between their technologies, we need to develop a good mechanism for network selection, and access that best satisfy user requirements. Many public areas (collages, airports, hotels...etc) have different systems for providing internet access. However, wireless APs (Access Points) is widely used for associating users with the core network. Network selection mechanisms are of premium importance in ensuring the desired quality of service and moving towards harmonization among heterogeneous networks. This paper investigates an effective and efficient scheme that allows mobile terminals dynamically to select the most appropriate network path according to user preferences such as: cost, speed, quality, and capacity.