File "injection" ?

Hi, I'm trying to write a hack (if you can call it like this) for OCTGN. The program is a board game simulator, and people mainly use it to play MTG.
It uses definition files (which are basically zip files which contain python scripts and other stuff), and once you start it up, the definition file can't be modified externally. However, if you extract the game def., you can modify the scripts. The problem is, you can't modify them too much because when the program starts, it checks the game defs. If one file is different than the remote one (probably on their server), then it doesn't load it and you can't play the game.

Now, I was thinking about loading the original game definition, and once logged in, I thought about somehow 'injecting' a pre-written python script that should replace the one inside the game definition. I never did something like this, so I'm asking here for help. Is it even possible with AutoIt?

OFF:That's how Metin2 works too. but the .zip files are .epk .... actually .epk are archives too,used by metin2 only,and they contain python files. The HackShields checks for the files too,and you can't modify them.

ON: I'm 95% sure that AutoIt CAN NOT do that.

OFF2: I can give you an advice(it worked on metin2)When a new update comes(if your game has updates) and there are new .zip files( metin2 had patch_update_xmas.epk) just go inside those files,and put your .py script there,because after the updates,the "file checker" is not updated imediatley,so youyr hack may work for 2-3 weeks i guess.

But i don't know that game,so i'm not sure i helped you,but i hope so.