[CentOS] Custom user profile for GNOME 3?

Hi,

I wonder where - and eventually how - GNOME 3 stores its user 
preferences. I'd like to create a custom user profile, with slightly 
different settings than the default ones:

* don't show home folder on ~/Desktop
* don't show Trash
* use custom default wallpaper
* stretch wallpaper instead of zooming
* use different default icon theme
* etc.

Until now I've done this successfully with desktop environments like 
GNOME 2, Xfce or KDE. I just copied over the relevant files from 
~/.config, ~/.kde4 (IIRC), ~/.gconf or whatever to /etc/skel, and newly 
created users had their settings ready.

Anybody knows how I can manage this with GNOME 3?

Cheers,

Niki
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