Howtoforge posted a guide about setting up gOS as desktop

This tutorial shows how you can set up a gOS 1.0.1 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; it uses the Enlightenment 17 window manager instead of GNOME or KDE.

The Perfect Desktop - gOS 1.0.1