I see there is software available to modify the save games files. But, the ONLY thing I really want to do is change the game's level of difficulty. But, I did not see any way to do that with the software.
Specific: I like playing the game with average level - on the games I am winning - there is no chance for me to lose. So, I would like to change the level to Hard or Impossible then continue playing otherwise it is boring.
So, it would be GREAT if I could change the difficulty level in the save game file.

Does anyone know how to do this?
Thanks!