Gnome 'Super-#' hotkey like in Unity

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http://askubuntu.com – I've been using unity for a while, and just switched to gnome. (Gnome 3.2 on Ubuntu 11.10) I've liked it a lot, but it's missing one key feature (in my mind). In Unity you can use the super button with a number key to open an app on the launcher. For example: Chromium is my second app on the unity launcher, so I can press super-2 to launch it. Is there any way to do this in Gnome? Thanks in advance. (HowTos)