Visit a passport service center or a professional photographer to obtain two passport-type portraits. These portraits must be 2X2 in size and show a clear, unobstructed view of your face.
Print the International Driving Permit application. The only two authorized US providers are the AAA (American Automobile Association) and the NAC (National Auto Club).
Fill out the application completely. Include your two passport-sized portraits and a photocopy of the front and back of your state-issued driver's license.
Mail the application, portraits and photocopies to the address listed for either the AAA or the NAC. The AAA fee is $15 (includes S&H); the NAC fee is $15 (plus S&H). Both fees are valid as of November 2009.
Wait four to six weeks for your application to be processed. Once it is processed, you will receive your International Driving Permit by mail.