5 upgrade points
     At the Crew Screen enter Up, Down, Left, Right, Select, Start, Select.

All ships available in all missions
     At  the  main menu, press Up, Down, Left, Right, Select, Start, X
to unlock all ships available in all missions.

All ships for Skirmish and Multiplayer modes
     At  the  skirmish  screen  enter  Up,  Down, Left, Right, Select,
Start, Square.

Mission Select
     At the main menu, enter Up, Down, Left, Right, Select, Start(2).

Unlock Klingon Campaign
     At  the  main  menu,  enter Up, Down, Left, Right, Select, Start,
Triangle.