You gotta love the fact that only one person actually answered the question.
Read up on the following:
Jepp ATC, PBN (RNAV/RNP), current fleet details, transonic aero-d, Handling the big jets etc. Know your current type technical well. Know the difference between Part 121, 91 and 135. Go over ETOPS (have a look at 'beyond 180min' ETOPS) and Ultra Long Haul Ops. Perhaps a brush over of some aero med. I remember been asked what Tinnitus was. Know the definition of Vmca. Smile and say you don't know when you don't know. Call everyone Sir or Capt. Wear a tie. If you get through all of this you should be ready for direct entry command.
Last edited by divinehover; 1st Jul 2012 at 18:46.