Question about mini images

I am trying to create a mini image of a game DVD (NFS: Most Wanted). I have followed the updated guide in these forums, howver the resulting image size is 1.8 gigs. Like the guide mentions, the files are all empty, but still have their original file size. How would I go about getting, like the guide mentions, a 1-5mb mini-image. BTW, when zipped, the 1.8gig image is only ~800kb…