Added Construction Time:
     Hit  pause  at  the beginning of a level and go to the stop watch
symbol.  Now press and hold L1 until the indicator reaches the left of
the bar. You now have extra time to build your rooms.

Clean Hospital:
     To  get  a clean hospital, save the game and reload it again when
the  hospital  becomes  full.  All  of  the  garbage and patients will
dissapear, allowing a fresh start!

No More Rats:
     If  there are rats in your hospital, just put a plant in front of
the hole.

Skip Level:
     On  the  fax screen put in 24328 into the phone numeric keypad to
access  the cheat mode. Typing in 7287 will also take you to a special
rat-shooting level after you've completed your current level.

Level Passwords:
Level 2:X, Circle, Square, Triangle, Triangle, Circle, Square, X.
Level 3:Circle, Circle, Triangle, Square, X, Triangle, Circle, Triangle.
Level 4:Square, Triangle, Circle, Square, X, X, Triangle, Circle.
Level 5:Circle, Triangle, Square, Circle, X, Triangle, Circle, Square.
Level 6:Square, Triangle, Square, Circle, X, Square, X, Circle.
Level 7:Square, Triangle, Triangle, Circle, X, Square, Triangle, Circle.
Level 8:X, Triangle, Square, Circle, Triangle, Circle, Square, X.
Level 9:Triangle, Square, X, Triangle, Circle, X, Triangle, Square.
Level 10:Circle, Square, X, Triangle, Square, X, Circle, Square.
Level 11:Triangle, Circle, Square, Circle, Triangle, Square, Circle, X.
Level 12:Circle, Square, X, X, Square, Circle, Square, Triangle.