Just checked the site ( thanks) It seems the sound card I have is " almost impossible to congigure" ..... so that explains my problem . I loaded and tried on an old 98 machine and this ran the sound OK. At least there was some sort of synthetic music that came on before the machine curled up and died ( the resaon it was moithballed ) .. I never actually got to the gunnery bit .
So for the moment it looks my choices are no sound or no game.