Q:

How do I get windows previews when hovering over icons in the launch bar? 

Guys I saw a video on the net regarding compiz to enable windows preview option when i hover a mouse over it.  That would be similar as in Windows 7. 
I installed compiz through Ubuntu Software Centre and then I searched and found that there is no option called "Windows Preview" in it! 
There is a unity option but it doesn't have a windows preview option. 
Also I would like the freedom to move unity anywhere from top-bottom-left-right. 
Will this damage my system? 
Please reply at the earliest :-| 

A:

You have to install "CompizConfig Settings Manager" through Ubuntu Software Center. 

Then launch the  "CompizConfig Settings Manager" application and search in "Extras" for the "Windows Previews" plugin and enable it. 

Move your mouse to the unity laucher and the "preview window" should appears. 

Cheers.