How to install adobe AIR Application to an Android OS

Flash uses AIR to create your applications for Android. By default, AIR is not installed on the Android phone. This does not stop you from installing your new app, it will simply stop you from running it.
Fortunately, AIR is freely available in the Google Marketplace.
If your phone does not have AIR installed you will be prompted to download and install it from the Marketplace. There are no complex hoops to jump through.
If you have installed one app, then you know how to install AIR and enjoy all the Flash apps in the Marketplace.