GOAL:

I would like to make the little menu that pops up when I press Alt+Tab to gain the ability to jump to a particular window by pointing my mouse at one of the icons. This is the behaviour that my Mac OSX laptop has.

The Situation

I use Xfce, with the default windows manager (XFwm). I currently have Ubuntu 10.04 and 11.10, although I plan on updating both to XUbuntu 12.04 once the dust settles (probably mid-may?). (Clarification, for my current setup, I installed Ubuntu, then added xfce manually after the fact).

So, a series of related questions.

How do I set this up? (If this is not possible, please answer the following questions to help me learn)

Is the Alt+Tab a function of the desktop environment, or the windows manager, or some other piece? (IE if I switch to using some other tool, could I potentially get this) Are there any customizations that are available either from settings or add-on applications that would allow me to change the behaviour of that menu?