Need help making backup of Gran Turismo 4



Guyz i have been playing GT4 for some time now…i wanted to make a copy of it just to be safe…so i opened Alcohol 120% started the image making thing…it took its time to do the job and to my shock i was left with 5.20 GB iso file…i read over the internet about the DVD9 thing…but i dont know how to make a copy of it please help!!