hey I know this topic is old like John McCain but I need some advice. After finishing Modern Warfare 2 I wanted to go back in time and play this. Here's a problem I'm having though. I d/l a "non legal" copy and I installed it. When I go on single player mode there's an option to choose difficulty however when I click on it it, rather than execute the stage it goes back to the difficulty choices menu. Are there patches that can fix this. I mean I run MW 2 really good without problems and this game is older...