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.
|Invincible 1||God Mode|
|killpawns||Kill All Enemies|
|ghost||No Clipping Mode|
So, once you bind the commands, it will look something like:
...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.