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.
In Call of Duty: Black Ops Zombies, upgrading ammo at the Pack-a-Punch machine costs 5,000 points. This allows players to enhance their weapons with increased damage and additional features. Players can also upgrade their weapons multiple times, but the cost remains the same for each upgrade.
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
guns lol:)
No.
If you mean on zombies, through using the pack-a-punch machine for 5000 points. If you mean online, sadly it isn't possible.