The multimedia workstation described here serves as an information resource center for teachers and others who are responsible for the education of children from ethnically and linguistically diverse backgrounds. The changing nature of student populations requires that all teachers become knowledgeable about the diverse cultural backgrounds of their students and develop the necessary instructional skills and knowledge that promote students' continuing academic progress at the same time they are acquiring English as a new language. Using a technology-based workstation to accomplish this goal is promising because it allows individual teachers to structure their inquiries and training to fit their existing levels of instructional expertness. In addition, information and training about linguistically and culturally diverse student populations can be made accessible throughout wide geographic areas. The purpose of this paper is to delineate potential professional development areas that can be included in the workstation database. To assist in this process, interviews were conducted with teacher development personnel at universities and intermediate and local education agencies where technology-supported teacher development efforts are underway. These uses were mapped with the requirements for effective instruction of diverse student populations as reported in the literature and applied in California's (Bilingual) Cross-cultural, Language, and Academic Development (CLAD/BCLAD) credentials. Interview findings and a preliminary schema for design of the workstation database are included in this report. (Contains 13 references.) (Author/ND)