Legendary dogs:

To help you catch the three legendary dogs at the end,(Raikou, Suicune, and Entei) Catch a vaporeon, a golem and Jolteon. Use Golem's Poke Assist On Raikou. Use Minum's Poke Assist On Suicune. And finally use Vaporeon's Poke Assist On Entei. To reexperince capturing the legendary dogs again Go back to where You went the first time and talk to the man with two hypno. WARNING!!: Capturing the three legendary dogs again will restart everything you have moved or destroyed etc. with a field move.
Sent in by: arcelo

• You must first block the Pokemon from three sides. Stand in the fourth side of it. Then, throw a Pokeball to catch it. You will not be allowed to keep the Pokemon throughout the entire game. You must release it after about ten battles or it will run away.

Unlockables

Ranger Net - The Ranger Net is a series of special missions, each giving you the chance to encounter a rare Pokémon.

In Japan these missions are only available at special events, just as the Pokémon are only available to players of the RPGs at such events, but in the U.S. they are all unlockable.

1) Ranger Net Complete the game’s Story Mode
2) Mission 1: Gain Deoxys’s Trust?! Unlock Ranger Net
3) Mission 2: Rescue Celebi! Complete the Deoxys mission
4) Mission 3: Find Mew, the Mirage! Complete the Celebi mission
5) Password entry feature On the Ranger Net screen, press R, X, and left (on the D-pad) simultaneously
6) Mission 4: Manaphy egg mission Enter the password, as revealed on the official website (P8M2--9D6F--43H7)
7) Manaphy Egg Watch/Transfer to Diamond or Pearl Complete the Manaphy egg mission

Action Replay Codes

Super Max Styler Power
22135510 00000063
22135518 00000063

LEVEL UP CODES:

Quick Level Up
22135500 000000ff

Instant Max Level
12135500 0000ffff

CAPTURE CHALLENGE CODES:

Max Capture Challenge Score
0226ea74 0001869f

Max Pokemon Captured
2226ea78 00000063