Jacen

Hi, hope someone can help I've created a All in One DVD, which currently is 10GB and am spliting into 2 but would like to know if I can delete the i386 folders that have been copied from the o/s folder to the root? Or is there another way to optimize (Sp?) the iso file to make it smaller. I used MagicISO to create the all in one. Any help will be grateful. Thanks