I downloaded Win 7 Ultimate from the link on the Official Win 7 Repository and burned the ISO to DVD. Then used MD5 to compare. I put the entire download on the DVD and ran MD5 on the entire DVD. The result is very different. Can someone advise this greenhorn? Your listed MD5 D0B8B407E8A3D4B75EE9C10147266B89 The MD5 Checker 503919CF44A9EBB945BE441D4BD32619 Thanks