This study reports on the integration of English for Specific Purposes (ESP) multimedia courseware for oral presentations into a self-learning and elective program for non-English major students in an English as a Foreign Language (EFL) setting. A computer-aided instruction approach, combined with a task-based learning approach, was adopted. Computers played a central role as the means of information delivery. The courseware acted as a silent partner and played the role of a tutor and adjunct teacher to provide students with authentic materials for learning to give English oral presentations in international business and technical settings. It offered a variety of learning activities with instant on-line self-evaluation for students to practice integrative language skills and learn content knowledge. Evaluation of student performance was based upon data from pre- and post-tasks, student questionnaires about concerns, and an open-ended questionnaire. After active participation and self-learning, most of the non-English major students clearly indicated they had made some improvement or progress and felt their learning effectiveness for preparing speech texts was significantly improved. In addition, they had become more concerned about their English ability and the ESP courseware was able to meet their need for greater linguistic support to enhance their language ability.