Where can I find FREE, (and I do stress FREE), CoD back ops zombes hacks or mods?

u can use a USB chord and attach ur hardrive to ur computer and through some modding software u can mod the game to give u stuff like infinite ammo or u can install a mod chip into ur 360 i dont really kno any details but thatz the only way to change stuff on ur 360 they only cost around 30 dollars or less so itz not gonna drain ur wallet (maybe u already kno all this)