A discussion of computer use for teaching English as a second language (ESL) at the college level examines what computers can do in and outside the classroom and why ESL teachers should become acquainted with them. It begins by defining the various tools and tasks of the computer, including word processors, instructional courseware, database managers, spreadsheets, statistical packages, models and simulations, and graphics editors, emphasizing instructional applications. It also reviews the basics of the use of word processors for composing and printing. Computer applications for language learning are discussed, and direct and indirect uses of computers for classroom drill and activities are outlined. Information on computer etiquette and efficiency, evaluation of computer usefulness, sources of further information, and a glossary are included. (MSE)