That depends on where did you obtain CyberLink software.
Boxed or Retail Version: Insert the software CD in your drive and the installation will begin automatically. Select install and then follow the instructions on the screen to complete the installation. You need the activation key that is located on the CD case.
Trial Version: After the download is complete, go to the location on your computer where you saved the trail version of a program and then double-click on the Setup file to install. No activation key is required.
Download Version (online purchase): Upon successful processing of your online purchase, you will be directed to a Thank You page. On this page you can download the purchased software by either clicking the 'Download' button or by right clicking on the ‘Download' button and choosing 'Save Target As' in your browser. After the download is complete, locate where you saved the program and then double-click on the executable program (usually Setup.exe) to install. Then follow the instructions to complete the installation.
Bundled Version: This version came with some hardware your purchased and may already be installed on your computer. A backup file (and activation key if required for installation) should also be included in the Recovery CD/DVD or on a separate CyberLink software program CD. If the software is not pre-installed, simply follow the steps of the Boxed or Retail Version described above.