Yeah, idk how them are using but when i play mario kart DS online all the time i find cheaters with 300cc cars, and infinite powers (red & blue carapaces) i hate them! ....please tell me what u think about nintendo WFC hackers, ^^ email me. Im corious too, how it works, ps: ill never use hacks, i dont need :], i just want to know why in youtube videos they show actionReplay as the hack, and, what is actionreplay. Thx.