how to activate compizconfig setting manager...

Install Compiz & Compiz Fusion plugins

From Ubuntu:

sudo apt-get install compiz compizconfig-settings-manager

Run Compiz



it will come in system>prefrences>compizconfig setting manager

You can select different themes with the emerald-theme-manager tool. To download the themes for emerald You must first install subversion, then activate the theme repositories.

sudo apt-get install subversion
svn ls https://svn.generation.no/emerald-themes

To activate dekstop cube there must b 4 workplaces... found at bottom right corner of the screen.

https://help.ubuntu.com/community/CompositeManager/CompizFusion