Hi, I was sent an iso game file but it is too big to go onto a dvd. It is 5.5 instead of 4.7. Is there any way to shrink it. I am running windows 7, I have tried to mount it instead of burning it but windows 7 wont allow me to use any of my mounting programs I used to use with XP. So is there any way to put this onto a dvd-r