To install optional packages from the Mac OS X install discs:
Insert one of the software install discs into your computer.
Double-click the package file to open the Installer application. The package file icon looks like a box.
Follow the on screen instructions. When you see the Customize button, click it.
Check the boxes next to the items you want to install. To see a description of an item, click the item.
Follow the on screen instructions to finish the installation.