Only Mac OS X can handle DMG files, so you'll have to install Mac OS X Lion (or Snow Leopard) on your PC first. A compatible Hackintosh with Snow Leopard/Lion already installed: In this tutorial, you're going to work with DMG files, which are Apple's proprietary 'disk image' files.If you installed Mac OS X Lion on your Hackintosh manually (without tonymacx86's tools), you'll probably be very familiar with the process described in this tutorial. The steps for making a Mountain Lion installer USB drive are almost identical to the steps for making a Lion installer USB drive. Check out the Unibeast method of installation instead. The folks at tonymacx86 won't release a tool for Mountain Lion until later this year, but you can already make a Hackintosh-ready installer for Mountain Lion by yourself.
If you downloaded a copy of Mountain Lion from Apple's developer program, it's actually not very hard to install it on your Hackintosh.
A few weeks back, Apple gave the world a sneak peak at Mac OS X 10.8 (Mountain Lion).
