This self-teaching CD-ROM uses modern technology and animated graphics to supply the knowledge to troubleshoot a wide range of air conditioning and refrigeration systems, the company says. The hundreds of animated and interactive graphics are used in a step-by-step manner to instruct and encourage student involvement. The user selects the topic and can stop and start at any time. The CD contains 14 chapters including fundamentals, refrigeration cycle, refrigerants, various components and controls, and systems. AC&R Training Institute, Inc., 6937 41st Terrace N., St. Petersburg, FL 33709; 888-557-5242 or 727-381-5242; 727-347-9127 (fax);www.acr-training.com(website).