you cant on the wii version
you can,t upgrade wepaons on call of duty 4 on playstatoin 3 you can only change their skins like woodland, desert, blue tiger, and red tiger, and gold, skins.
to upgrade your heatlh
(Xbox Live) You have to level up to get more weapons.
no there is not a zombie mode on call of duty world at war for wii.
most of them are types or flamethrower
27 Including pistols.
with over kill
The Call of Duty Wikia has a complete list of the Call of Duty Black Ops weapons from the related link
No.
guns lol:)
If you mean on zombies, through using the pack-a-punch machine for 5000 points. If you mean online, sadly it isn't possible.
I am not sure if it has got zombies on it then yes it will mainly because with the modern weapons and the frill of blowing zombies in to pieces the will join like pizza and chips! Call of Duty Modern Warfare 2 does not have Zombies which are in Call of Duty Black Ops and the Call of Duty World at War Map Packs