VistaSwitcher

This program is still in Beta, but it's worth a look-see :)

VistaSwitcher is an elegant and powerful task management utility for Windows OS. Once installed, it replaces the default Windows Alt-Tab dialog with a nice box that shows a list of all running tasks with their names and preview snapshots and enables the user to take actions on them using the mouse and keyboard shortcuts. With just one click, you can switch to a task, minimize, maximize, restore the main window or close the process.

VistaSwitcher - Speed Up Windows Alt-Tab - NTWind Software

You're welcome :)
I forgot the tutorial about how to use it... VistaSwitcher is a Ridiculously Awesome Alt-Tab Replacement :: the How-To Geek