During gameplay, press CTRL+SHIFT+S to bring up the game settings menu. First,
type " cheat allowcheats" (no quotation marks) and press enter to enable cheats.
Then, enter the following codes onto the dialogue box of that window to activate
the corresponding cheats:

cheat allowcheats.....Enables Cheats.
cheat allunit.........Allows you to build any unit, even if you haven't
researched it.
cheat breakground.....Instant contruction of facilities.
cheat e=mc2...........Causes research to be completed in one day.
Espionage succes rates increase as well.
cheat endday..........Prevents the computer from doing some daily
calculations (such as "spotting"). Using this cheat will increase game speed.
cheat georgew.........Adds $10 billion to treasury.
cheat instantwin......Makes you instantly win the game.
cheat nomove..........Prevents units from moving.
cheat onedaybuild.....All units set to be constructed will be completed
the next day. However, this also applies to the AI and can slow down the game.
cheat saddam..........Random AI country will declare war on another
random AI country.
cheat saddme..........Random AI country will declare war on the player.
cheat shelovesme......Increases your country's relationship with the UN
to max level.
cheat shelovesmenot... Decreases your country's relationship with the UN
to minimum level.