Cheat Gnome
     While playing, press [L], [L], [R], [X], [X], [Up].

Pet points
     While playing, press [Triangle], [Circle], [X], [Square], [L1], 
[R1].

Advance time 6 hours
     While playing, press [Up], [Left], [Down], [Right], [R1].

$10.000
     While playing, press [Triangle], [Up], [Left], [Down], [Right].

Cheat Statue
     At  and  inside  your  house enter [L], [L], [Tringle], [X], [X], 
[Up]  Go  to  town  square at the opposite side of where you spawn and
there should be a statue with two red rings around it.