You mean the CD that comes with the audio-visual class? ! If you are a win7 system, it's the first time to give a tutorial on an audio-visual CD. After inserting it, he will remind you that your system doesn't support the recognition engine (your system doesn't support the recognition engine) and ask you the next plug-in. Click OK, then click Yes, and then he will tell you which CD to put. But I can't change his path every time, so I click "Cancel", but he will automatically appear two installers and then go in. He will ask you to enter a "student ID" and a "password" first, but if you pay attention, you will find a "domain name" below, which is a website by default. Manually change it to Work Offline. If it is already, it is not needed. If you change it, enter your "student ID" and "password", but this time it is set casually. For example, the "Student ID" is set to 123456, and the "Password" is set to 00000 (free play). Click OK.