Possible Duplicate:
How to revert to GNOME Classic?
Can a Gnome2 like interface be built upon the new Gnome3 code?
How do I make an Ubuntu 11.10 setup running XFCE, or maybe GNOME 3 classic mode look and behave exactly like the classic Ubuntu setup of Ubuntu 10.10?
well, you may choose to install xubuntu: http://www.xubuntu.org/ or if you have ubuntu with unity already installed, you can install the xfce desktop by:
OR
you install gnome 3 by:
When installed, you may choose it in the login screen (gnome classic is what you mean). Thats it.
You just need to install Gnome Panel:
It's a little different than the Gnome Panel of 10.10 but it looks like.