"Virtualisation is a bit of a buzz word at the moment. Virtualisation can be used for all sorts of different computing tasks from server consolidation to cross-platform software development, to running that one 'must-have' app in that "I-wish-I-didn't-have-to-use-this-damned-OS' OS. This howto is more at the latter end of that scale. It will tell you about some VM options for linux, and will run you through how to set up a VM and load an OS in one of the better VM's--which also just happens to be open source and free (as in beer) for personal use (more about the licensing terms later)..."