[ubuntu] Help trying to install gnome shell

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http://ubuntuforums.org – I am trying to install Gnome shell. When doing internet searches I found some screenshots that showed that it had a nice UI. For example : http://www.gnome.org/gnome-3/. It looks great. However when I install it, it looks nothing like the screen shots. Its simple and bland looking. here is a screen shot. http://i.imgur.com/3tbhB.png So, what am I doing wrong here? Thank you. (Hardware)