VMware Workstation 4: More Virtual PCs, More Functionality
Imagine not one, but two, three or more separate operating systems loaded on a single PC, each of which functions as a separate OS on a separate physical machine. VMware Workstation 4 does just that by creating and managing one or more virtual machines on a single, physical host PC. Every virtual machine is a full-fledged virtual PC, where you can install a guest operating system of your choice, with network configuration and a full suite of PC software. Read the article at TomsHardware.