I am currently using megapirateNg for my HK multiwii pro board...can it compile the megapirateng code....i tried to do it but I was ubnable to do it...plz help me...thanks 

It is based on ArduPilot-Arduino-1.0.3-windows IDE modified versionof arduino for ardupilot.
The changes made are only in one file "pde" file located in lib folder.
The changes made are

  private void createBoardTable()
  {
    this.halBoardsTable = new HashMap();

    this.halBoardsTable.put("none", new APHal(null, "None", null));

    this.halBoardsTable.put("apm1", new APHal("HAL_BOARD_APM1", "ArduPilot Mega 1", "mega2560"));

    this.halBoardsTable.put("apm2", new APHal("HAL_BOARD_APM2", "ArduPilot Mega 2.x", "mega2560"));

    this.halBoardsTable.put("mpng", new APHal("HAL_BOARD_MPNG", "MegaPirateNG", "mega2560"));
  }

apart from apm1 and apm2 they have just added there own mpng type line in class rest all the files are same...thnaks for the reply