Howtoforge shows you how to setup Ubuntu Studio 12.10 as Windows desktop replacement
This tutorial shows how you can set up an Ubuntu Studio 12.10 desktop that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge. Please note that Ubuntu Studio 12.10 uses XFCE as the default desktop environment.The Perfect Desktop - Ubuntu Studio 12.10