How to change the nickname of my pokemon in white?

I know in previous games there has been a person who could change your pokemons nickname, where is he in the new pokemon white/black game?|||he's in Castelia City, near the entrance to Route 4. ave fun :)|||Go to the Name Rater in Castelia City. He is in the western building near the entrance to Route 4. Remember, you can't rename traded Pokemon.