How can i do this to nav tabs

I want to make my tabs with litlle pics, like this face book one, and the dashboard etc :-)

Upload the icon you want to use. A 16x16 png image to templates/base/images/icons

Then go into menu builders and edit the top level menu item. In the icon field put the name of the image. Just the name of the image, not the full path. Like myimage.png

Piece O Cake.

What a legend!! Thanks m8 :-)