Howtoforge posted a tutorial about setting up gOS Rocket G 2.0 (GNOME) desktop as Windows desktop replacement

This tutorial shows how you can set up a gOS Rocket G 2.0 (GNOME) 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. gOS is a lightweight Linux distribution, based on Ubuntu 7.10, that comes with Google Apps and some other Web 2.0 applications; gOS Rocket G 2.0 uses the GNOME desktop.

The Perfect Desktop - gOS Rocket G 2.0 (GNOME)