Take some time to learn but really worth the try...
But as everything in this world, this has a solution;
If you search for IG2 Nvidea Fix you will find on the game producer forums some links to a download of some files. Just replace them and make a bunch of actions (which I recognize isn't easy for some users out there). This way it will work well, just a few graphic bugs but fine.
About the game and missions on it, I think if you like the management kind of game you will really love this title... The graphics could be way better than they are but I remember when it was released it was a very soft game, even old machines could run it.. As I classified, it REALLY worth the try ;)