"The majority of Linux users have gotten used to keeping more than one operating system on their hard disks. Most frequently the second system is a version of Microsoft Windows. Switching between the two systems tends to be irritating, especially when the secondary system is needed only once - to run an application WINE has refused to start, for example. Now we introduce the virtualization technology which allows us to run several systems on the same computer, at the same time, all under the control of one of them, called a 'host'. My examples are based on the VMware Server Console v. 1.0.3 (distributed from its manufacturer's website free of charge) running under Mandriva Linux Spring with KDE 3.5.7."