morundos: Why do you NEED 7.5.1 and 7.5.2, anyway? Really...System 7.5.3 was released for a reason...to fix a LOT of bugs that were present in 7.5.1 and 7.5.2. Really...there's nothing you can do in 7.5.1 or 7.5.2 that you can't do in 7.5.3 or 7.5.5. And its much more reliable, and much easier to go with the System 7.5.3 offered by Apple and then the 7.5.5 updater offered by Apple than it is to go with any of these offerings that you've put up on RS.