I cannot install the eval version

upon the suggestion of someone i downloaded the 7.2 iso evaluation again and checked that the md5sums are the same, but I cannot still install this evalutaion version: it fails each time i choose: manual (at the first prompt) --> ...loading kernel.. -> US -> US -> start installation -> cdrom -> ..loading ramdisk.. -> yast1 (or 2) --> ..loading yast... ERROR! so, my doubt is if it possible installing an evaluation version of 7.2 without having those annoying files in the root of a c:\ directory thanks. alessio