In this paper, an Internet-enabled system has been developed to support setup planning, based on some state-of-the-art Java and Web technologies. The utilizing of XML as a file format provides means for the transfer of information between various manufacturing systems. A fuzzy set theory based intelligent approach for setup planning is introduced. In this approach, the setups are automatically planned based on key factors of machining practice, tolerance requirement and manufacturing cost. Finally, a case study is presented to illustrate the proposed system and to show the effectiveness of the presented setup planning approach.