By many the Linux world is regarded as being a scary or challenging place with tons of poorly engineered terminal commands and all sorts of difficulties to install and use a Linux distribution. While this is really not the case with modern day Linux, one of the areas where Linux has rapidly progressed is in the field of virtualization. Among the virtualization options are Xen, QEMU, QEMU with KVM, and VMWare. With Fedora 7 it's so easy to use KVM virtualization that you can start virtualizing your favorite operating system and barely even touch the keyboard! In this guide we will tell you how as we work on virtualizing a battery of operating systems from Microsoft Windows Vista to Mandrake 9.2.