Here are the codes:
Pok�mon Full Happiness:
94000130 FDFF0000
B21C4D28 00000000
B0000004 00000000
10001170 000081ED
D2000000 00000000
Press L+R to activate. It will not give your pokemons max happiness. Press L+R and talk to the fossil guy at Oreburgh Museum. He will give you an Arceus, lv. 20 with max happiness. Believe me, it worked for me.