You can't, unless you buy some sort of cheat-code software like TT DS, Action replay etc.
Action Replay
to catch another trainers Pokemon on pearl you have to have an action replay system or some kind of flash card
You can use a Action Reply codes to catch other trainers pokemon.
If you really want to, use your masterball because it never fails. Masterball fails on other peoples Pokemon. I learnt from my mistakes... you cant catch trainers Pokemon it wont work with any type of poke ball(it would've been cool if you can catch trainers Pokemon though=)
You don't. You just trade with them, if they want to trade with you. ;)
you cant get a murk row on Pokemon pearl but you can in Pokemon diamond. instead, pearl gets misdreavous, but if you want a murk row and you only have pearl then find a friend who has diamond and ask if they can catch one and trade it with you.
No trainers will have articuno.
You have to get the natainal pokedex go to palpark and magrite Pokemon from a gameboy game and do a cating show.SO YES YOU CAN!
works great with masterballs code but it alows u to catch any trainers Pokemon like if you wanted cyinthias garchomp throw a pokeball and it will alow you to catch it
You can't steal Pokemon however in Pokemon colosseum and Pokemon xd gale of darkness you can snag shadow Pokemon from trainers.
You are not allowed to catch other trainer's pokemons on any of the Pokemon games. You may only catch Pokemon from the wild or receive them through other means (events, game corner, eggs, etc.)
Tyson have a Munchlax on Pokemon Pearl