You can't
If you mean the old Nazi zombie maps then you need the code from the Hardened Edition, but if you are referring to the multiplayer maps, it is impossible to play them on Black Ops unless they are brought to us in a new map pack.
There are 14 maps on Black ops when you first get it.
Black Ops zombie maps do not work on World at War and the only ones from World at War that work on Black Ops are those that were modified for Black Ops and are not the same maps used for World at War and even have different Weapons for the Black Ops game
No they have different perks for Black Ops II. None of the original maps will work in the new game and they are not making any of the 11 Black Ops Zombie Maps into versions for Black Ops II
no, all the black ops come with zombies but prestige and hardened just come with the old nazi zombie maps and the new black ops maps
compared to other black ops 2 maps yes comapres to other black ops 1 and waw maps no it sucks dick
No the Black Ops maps have all been released. Wii does not get any
14 maps, they are:SummitVillaWMDArrayCrackedCrisisFiring RangeGridLaunchNuketownRadiationHanoiHavanaJungle
you buy the maps
No
by modding your console
No the maps are different