yeah, thats right... but u can also use your neighbours wlan . i used to, but now its quite cold outside(i must usually go to balcony to get good connection). if u have pokemon diamond/pearl, i suggest u to visit: Serebii.net Chat ... its like big pokemon sale . there u can trade and battle.
i dont have yet wlan so i dont give mine codes... btw. i have mario kart ds and pokemon diamond