There is no frozen ATP situation in the US. You can write your exam before you have the required 1500 hours experience, your exam results are then good for 1 year (don't quote me on this, it may be 2 years). After attaining your requisite experience as outlined in 61.159, you can take your flight exam. For the examination itself, refer to the Practical Test Standards guidebooks (
http://www.tomgorski.com/asr/atptsindex.htm) that will outline all of the maneuvers you will be tested on during the flight.
hope this helps
