Unless you have a specific reason for doing so, you do not need to change the installation location. Click "Next".
This screen shows three installation options. Unless you have installed Quicktime before and are aware of what each option provides, we advise that you choose the "Recommended" option. This will install the most-often used components. Once again, click "Next" to continue to the next screen.
This screen allows you to choose where the Quicktime icons will be located within your Start Menu. By default, the installer will create a new folder named "Quicktime". If you already have a folder in your start menu where you would like Quicktime's icons to be located, you may choose it from the list on the screen.
Click the "Next" button when you are ready to proceed.