That depends on which version you have. If you have the... Packaged Version: Insert the software CD in your drive and autorun will start. Select install and follow the instructions on the screen to complete the installation. You need the CD key which is located on the CD case.
Trial Version: After the download is complete, go to the location on your computer where you saved the program and then double-click the Setup file to install. No CD key is necessary.
Download Version: Before you can start downloading your software, you will have to wait for an email confirmation. You should receive this email within one hour. This email will also contain a CD key which is needed before you can install the software. After the download has completed, go to the location on your computer where you saved the program and then double-click on the Setup file to install. Then just follow the instructions to complete installation.
Bundled Version: This version came with a hardware purchase and may already be installed on your computer. A backup file should also be included in the Recovery Disk or on a separate CyberLink software program CD.
If the software is not pre-installed, then simply follow the step for the Packaged Version described above.