Nabiki beach, after becoming a ranger.
No, you cannot transfer Pokemon from Diamond/Pearl to Pokemon Ranger Shadows of Almia.
you cannot cheat in Pokemon rangers shadows of almia
capture Lucario in the almia castle
all of the Pokemon from all the versions (that is Shadow of Almia)
By Pokemon ranger/Pokemon ranger shadow of almia or by Pokemon modifier action replay code
no but you can transfer regigigas to Pokemon ranger 2