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.
Best Answer
If you are looking all keyboard shortcuts, type
keyboard
in launcher hit enter to open it. You can find all shortcuts under shortcut tab.