I'm using OpenSUSE 11, using the Gnome repository from download.opensuse.org, and I cannot find where do I configure a keyboard shortcut on Gnome to launch an app.

I used Gnome Control Center > Personal > Keyboard Shortcuts.

I want to add a shortcut, for instance Alt + Z, so whatever application I'm running (whatever window has the focus), when I press Alt + Z (as long as that app does not have this as a shortcut) a preconfigured application will launch.