Make sure you have the Adobe AIR extension for Dreamweaver, download it from http://www.adobe.com/products/air/tools/ajax/

 

Click the Site menu, then AIR Application Settings.


Under Installer Settings, click the Set button.

Select the "Sign the AIR file with a digital certificate" radio button.

Click Browse and select the PFX file that contains your code signing certificate.

Enter your password and check the "Remember password" box (optional)


Type in a name for the AIR package you are creating and click Create AIR File.