Instructions
Insert the Action Replay in the slot at the top of the console and insert the game cartridge in the Action Replay. Turn your Nintendo DS on.
Select the "Asterisk" icon at the bottom-left of the screen by using the console's stylus.
Choose "Add new code."
Enter the following code by using the on-screen keyboard:
Tap on "OK." Darkrai will now be added to your Pokedex.
94000130 FCFF0000
B21C4D28 00000000
B0000004 00000000
0000AA3C EDB88320
2000AA68 00000008
D2000000 00000000