It's a long process of just catching up to it. you'll be able to catch it after you've got almost all the badges from kanto region. There are several places you have to see it in kanto region before you get to catch it at Bills house near cerulean city.
After you've seen it jumping around several times, it'll settle at the end of Route 25. Then you can catch it.
use a master ball
1st:Throw the Ultra Ball 2nd:See if it catches it Easy.
You can't catch Rotom in heartgold.
you cant catch him in heartgold you can only get him in soulsilver
You can't catch him in HeartGold. Only in SoulSilver. In HeartGold, you catch Kyogre in Embedded Tower. If you transfer either Kyogre or Groudon to the other game, you can catch Rayquayza
You can catch Ekans in Pokémon HeartGold in the Safari Zone in the Marshlands area.
you can catch lugia in whil islands in heartgold
You can't catch Skitty in Pokémon HeartGold or Pokémon SoulSilver but you can catch it in the Hoenn Field in the PokéWalker device and then transfer it over into HeartGold or SoulSilver.poke walker .
Go to the Dragon's Den and go off to the far right and go onto the grass. Suicune will then suddenly appear.
you can only catch him in soulsilver
no