Set up Remote Disc on a nearby Mac or PC.

Select a nearby Mac or PC with an optical drive. On that computer, install the Remote Disc Setup software (found on the supplied Mac OS X Install DVD). It is now permanently enabled for Remote Disc.

Insert the software disc you want to install.

Insert the DVD containing the software you want to install on MacBook Air into the optical drive of the Remote Disc-enabled Mac or PC.

Install the software on MacBook Air.

In the Finder on MacBook Air, under Devices, select the icon that says Remote Disc. Click on the computer you enabled, and then double-click to open the software DVD. Now proceed with the installation just as if you had a built-in optical drive.

Even migration is wireless.

How do you transfer all of your files, music, photos, and other valuable content from your old Mac to your new MacBook Air? Forget the FireWire cable — that’s the old way. MacBook Air lets you migrate everything wirelessly.

When you turn on MacBook Air for the first time, Setup Assistant walks you through the initial setup. Install the Remote Disc Setup software on the old Mac, and it will then be available to transfer information onto your new MacBook Air. It’s all wireless. All simple. And all secure.

Wireless movie rentals.
With iTunes, you can now rent, download, and watch the latest blockbuster hits as well as classic movies on MacBook Air. So you can have one of the world’s thinnest, lightest cinemas with you wherever you go. - By Apple Computers

Read more about MacBook Air in a news story titled World's Thinnest Notebook Macbook Air