If you really want to use a textbook but would like the multimedia that is on the CD, we have made special multimedia companion CDs to accompany these courses. These CDs do not contain the text of the courses, but they have all of the multimedia that you find on the CD course. These companion CDs are the ideal choice for someone who wants to use a book but does not want to miss out on the multimedia. Format: CD-ROM. Requires a PC computer with sound card and speakers, running Windows 95/WindowsNT or higher. Requires Internet Explorer 5.0 or higher (provided on the CD). We recommend at least a Pentium 100 processor with 16Mb of RAM. Although technical support is not available for Macintosh computers, the CDs are fully tested and do run on Macintosh computers running OSX or Virtual PC 5.0 or higher.