Cheat Method
Use the following method to enable cheat codes in the game.

     1)  Start the game and create a profile. Do NOT use the "DEFAULT"
profile. Save the game at least once after creating your profile.

     2)  Open up the .ini file for your profile using Notepad. You can
find this file using the folder structure "Documents and Settings\YOUR
USERNAME\Application  Data\Ubisoft\Tom  Clancy's  Splinter  Cell Chaos
Theory\profiles".  The  ini  file is named the same as the profile you
created in step #1.

     Note:  The  Application  Data  folder  is  HIDDEN  in  Windows by
default. To unhide it, open a windows explorer window, select Tools ->
Folder Options. Select the view tab and in the advanced settings area,
in  the  hidden  files and folders node, select the "Show hidden files
and folders".

     3)  Look  for empty keys to bind commands to. These may look like
"F1=",  "F2=", etc. Add any of the following cheat commands to the end
of these blank bindings.

Cheat code:             Result:
Invisible 1             Invisibility
Invincible 1            God Mode
ammo                    Give Ammo
fly                     Fly Mode
walk                    Walk Mode
playersonly             Freeze Enemies
health                  Give Health
killpawns               Kill All Enemies
ghost                   No Clipping Mode
OPSAT                   Unknown Effect

So, once you bind the commands, it will look something like:

F2=Invincible 1
F3=health

...etc. Make sure there are no spaces between the "=" and the command.

     4)  Save  the  file  and  start  the game back up, selecting your
profile.  Now,  while  playing you can use the keys that you set up in
the  file.  Using  the example above, pressing "F2" would give you god
mode, etc.