Windows 8 will eventually support compiling mozilla-central and related repositories and products. This page documents the steps to get a working Windows 8 development environment.
Installing Windows 8
The Windows 8 Developer Preview can be obtained from http://msdn.microsoft.com/en-us/windows/home/. You'll need to obtain the ISO to install it.
If you want to run Windows 8 on Virtualbox, see http://www.groovypost.com/howto/inst...vm-virtualbox/.
Installing Windows 8 is pretty straightforward for an OS install. These instructions assume you know how to do that.