Noting that the computer software cataloging system at the media center of the Washington (Illinois) Center for Continuing Education is essentially a card catalog in notebook form, this article describes aspects of the development and utilization of the system. Major sections describe: (1) software cataloging system terminology; (2) steps for collecting software, including criteria for evaluating instructional software for purchase; (3) collection of data about the software; (4) organization of records in the file; and (5) storage, manipulation, and transmittal of data and software. The first of five addenda describes books and articles released by the Online Computer Library Center (OCLC) which provide guidelines for coding and tagging bibliographic records for entry into the OCLC database. Information on joining an OCLC user group is included. The second addendum presents factors to consider in establishing a media center; the third provides guidelines for evaluating instructional software; the fourth lists the fields included as bibliographic data on a record; and the fifth lists procedures for the acquisition, organization, storage, transmittal, and manipulation of nonbook materials. (GL)