Catch all Pokémon is not easy, let put that in the front. I almost have all the Pokémon, but I used other Games like Pokémon Diamond, Platinum, HeartGold and Soulsilver. I did have used cheats, like the Rare Candy's, Master Balls, Walk Through Everything, All Items, etc. To catch the Pokémon that I have now took me about 3 years or something. So let's say it is hard working, but you can reach it, despite the fact that you can't catch Jirachi, Celebi, Manaphy, Phione, Regirock, Registeel, Regice, Regigigas and Deoxys. (Well maybe you can catch Regirock, Registeel, Regice and Regigigas at Pokémon Platinum, don't tried that.
catch it
catch all the Pokemoncatch all the Pokemon
I got to catch them all I can't help you
catch all the Pokemon or use an action replay
yes there is a code
Explore!
Get an Action Replay and select 100% Pokemon on pokedex.
Pokemon pearl is just like any other Pokemon game : you've got to catch em all
Catch all the Pokemon.
With alot of pacients and cheats Trust Me I did It
you can't but you can trade Pokemon at the pal park
Catch all the Pokemon in the game