changing game elements through .INI

alright, so theres this game i play Splinter Cell Double Agent. They have sized down the HUD (heads up display) considerably to this tiny rectangle in the corner. I loved this, but i want to make it disappear to make it more realistic. The only thing that the HUD shows you is the darkness meter, the map, and your place with either JBA or NSA. Now all of these can be accessed by the menu, and i dont need to see them in the corner. And as for the darkness meter, sam actually has a metere on the character itself. Its a little gadget.

So anyways i wanna get rid of the HUD, but how would i do this? Ive tried editing INI files, and they actually didnt do anything. I thought of deleteing the source file to the HUD but i figured id get an error, plus i couldnt even find it. So how can i change game elements such as this? Any help much appreciated!