Installing After Effects
You must purchase the Adobe After Effects CS4 software separately. For system requirements and complete instructions on installing the software, see the Adobe After Effects ReadMe.html file on the application DVD. You must also have Apple QuickTime 7.1.5 or later installed on your system.
Install After Effects from the Adobe After Effects CS4 application DVD onto your hard disk; you cannot run the program from the DVD. Follow the onscreen instructions.
Make sure that your serial number is accessible before installing the application; you can find the serial number on the registration card or on the back of the DVD case.