In 11.04 I change global hotkeys using gconf-editor, In 11.10 there no this software, and I think if developers remove it from base compection, maybe they do this configuration in Control Panel, but I can't find it
Also I'd try dconf-editor - and can't find hotkeys there.
keyboard
in launcher hit enter to open. You can find all shortcuts undershortcut
tab. If you i missed understand you, my apology :)