If you have a downloaded the Mac OS 10.5 or Mac OS 10.6 installer, you have to burn the .dmg file to a dual-layer DVD to install it on your system.
You do not have to burn iWork or iLife .dmg files to a dual-layer DVD. Instead, just double-click on the .dmg file to start the installation process.
303-735-4357 (5-HELP) or email@example.com
7:30 a.m. – 8:00 p.m.
12:00 noon – 6:00 p.m.