This paper describes a project addressing the assistive technology training needs of teachers of children with disabilities in rural eastern North Carolina, through development of a multimedia software tutorial service. The project utilized both a special education/assistive technology professional and an instructional technology professional to collaboratively develop a prototype tutorial. This paper describes the design and testing of the tutorial, which provides an introduction to the Unicorn Expanded Keyboard. The tutorial's development is summarized through four stages: (1) preparation and planning; (2) design; (3) programming the lesson; and (4) evaluation. Key features of the tutorial include its focus on two major competency domains previously identified for North Carolina teachers: using everyday software and hardware; and integrating technology into the curriculum, fitting it to the user's characteristics, and identifying and evaluating software programs. (Contains 10 references.) (DB)