The Ranger isn’t going to like this, Yogi.
This hack is a bit different. Instead of hacking the kernel, you use a bootloader called BOOT-132. It basically runs before anything else starts up and, with a few kernel extensions, it makes the system resemble the boot process of a stock Mac to the retail, unmodified Apple kernel. This means you can install OS X on your Eee with the Leopard disks you own, without modification, and without downloading a big ISO off bittorrent. It also means you can run Software Update without worry, since you are using a legit, unmodified OS X kernel.