The 3rd edition of this ever popular course combines some fantastic new materials with all the features that have made this course a bestseller. Market Leader Teacher's Book provides extensive teacher's notes and extra resources on a variety of subject areas relevant to your students' needs. 3rd Edition. Operating system requirements: Windows XP/Vista7, Macintosh OSX 10. 4, or above gnu LinEx 2006/Ubuntu 8. 10 or above. Hardware requirements: 1GHz Processor, 256 MB RAM, 1024x768 Screen Resolution.