Read the README and HACKING files to learn how to download the latest
GNOME from CVS.
You will need know the Gtk+ toolkit. If you are not familiar with it,
you may consider reading the
Gtk+ Tutorial.
When you've made your changes you need to make a diff... The best
way to do it is:
$ cvs diff -u > diffs
[FIXME: Does it work with anonymous CVS?]
After this send the diffs file to
<gnome-devel-list@gnome.org>.
In a short time one of the core hackers will answer you and he
is going to be your "GNOME godfather". Then, and until you have a
CVS account send your patches to him.
[FIXME: What think, you GNOME core hackers, about the godfather idea?]