Cheats for black ops nazi zombies?

alright so im looking for a code or something that gives me unlimited ammo in call of duty black ops zombies in either map, heres a video, http://www.youtube.com/watch?v=jK_cQP15x_M , and i know theres a link but it requires you to fill out a survey which ive done like three times and it hasn't worked so if anyone knows how to do this or where i can download it plz tell me.