I’m new to gnome (and to ubuntu), having used KDE (under OpenSuse, Fedora) and Xfce (under Arch) before. What I’d like is to have the left mouse click (on a desktop background) bring up an applications menu, and a middle mouse click bring up a list of currently open windows – two actions I can easily set in the other desktop environments.

But I can’t see how to do this in gnome.

Any ideas would be most welcome!

Thanks,
-A.