How to : Install a brand new Dock with expandable menu's for Ubuntu Hardy Heron!

One of the Best Dock in ubuntu is cairo dock,

and here is how we install it!!!

We add the repository to System->Administration->Software Sources->Third Party Software->Add:

deb http://repository.cairo-dock.org/ubuntu gutsy cairo-dock

Click Reload.

Open up synaptic Package Manager:

System->Administration->Synaptic and search for cairo-dock and cairo-dock-plug-ins then click install.

Once Installed you can find and execute Cairo Dock via Applications->System Tools->Cairo Dock

You can check for plugins or addons Here

And Here is a Documentation

Enjoy!