I added parking spaces to EISG using AFCAD by Lee Swordy and when I restarted Fs2002 the game crashed on the splash screen while loading the new scenery. Does anyone know what is happening. I haven't got a clue as I am a young gamer. Please Help ME!!!

Ouch! The first thing to do is go back to AFCAD and restore the original scenery files. The latest version of AFCAD can do this easily. You can read in and Export your version of EISG first to save it, if you haven't done that already. Then bring FS up again and see that it works. Try opening up EISG from the original file, making a trivial change and saving it.