Activation of cheats for Call Of Duty Black Ops requires editing of game's config.cfg file because there is no option in the game to enable/activate cheats.
First locate you installation folder (usually C:/Program Files/Activision/Call of Duty - Black Ops/). Inside you'll find players folder which contains config.cfg (if there is no such a file, you'll have to start game and exit as soon as the first level starts. This will create configuration file). Use WordPad (start/programs/accessories/WordPad) to open config.cfg. Seek for this line seta monkeytoy "1" and change it to seta monkeytoy "0".
During the game press tilde key (~) to bring up the console window and use these commands:
/god - God mode (immortality)
/demigod - extra health (you can still die)
/give all - additional weapons
/player_sustainammo 1 - Infinite ammo
/give ammo - extra ammo
/noclip - no clipping mode (go through things)
/ufo - flying mode
/g_speed [number] - Set player speed
cg_drawfps 1 - Show framerate
/devmap zombie_theater - Start "Kino Der Toten" Zombies map
/devmap zombie_pentagon - Start "Pentagon" Zombies map
/give [item name] - get specific item
While sitting in the chair (main manu), look down and press stand/jump key (SPACE by default). After couple of presses, you'll get up and be able to walk around. Go behind the chair and face the old terminal. Use following commands to play with terminal:
login - attempts a new session with a corresponding username and password
decode - decodes a stringusing the CIA's cypher
help - displays help
dir - displays the contents of the current directory
ls - displays the contents of the current directory
encode - encodes a stringusing the CIA's cypher
DOA - Lets you play "Dead Ops Arcade"
mail - opens the mail folder for the current user
cat - prints or shows the contents of a file
print - prints or shows the contents of a file
who - shows a lists of the users who have accounts on terminal
foobar - shows the following text on the terminal: "Fee Fie Foe Foo!"
alicia - starts Alicia, a virtual therapist
hello sailor - starts Zork, a 1979 text-based adventure game Zork on the terminal
zork - starts Zork, a 1979 text-based adventure game Zork on the terminal
3ARC INTEL - Unlocks all Intel in the game for viewing
3ARC UNLOCK - Unlocks Dead Ops Arcade and Presidential Zombie Mode