CD-ROM. New Interchange 2 The CD-ROM contains 16 units and is designed to be used alongside the Student' s Book to review and practice the language learned in class. At the core of each unit is a video sequence taken from the New Interchange Level 2 Video. There are also four progress tests. In total, the CD-ROM gives learners more than 100 activities. The CD-ROM can be used on both PCs and Macs. The New Interchange CD-ROM, Level 2, provides engaging and enjoyable activities for users to do on a computer at home or at school. New Interchange is a multi-level series for adult and young adult learners of English from the beginning to the high-intermediate level.