The Missouri district is a small rural school district with 450 students and 51 staff with a total of 210 client computers. The district consists of two schools (K-6 and 7-12) housed in a single building. This document contains the results of the four 2004 Total Cost of Ownership (TCO) case studies: (1) Software costs; (2) Hardware costs; (3) Direct labor costs; and (4) Indirect labor costs. These case studies are presented in the same format as the 2003 studies, but also have a focus on additional technologies beyond the base distributed computing model. These new technologies are voice/data integration, wireless networking, and e-learning. Definitions, related documents, and contact information are included at the end of the document.