Here is a step by step guide on how to install either KDE or Gnome as an extra user interface for Ubuntu – and how to swap between the two.
http://www.psychocats.net/ubuntu/gnome
About Simon Seagrave
Simon is a UK based Virtualization, Cloud & IT Technology Evangelist working as a Senior Technology Consultant and vSpecialist for EMC. He loves working in the ever changing IT industry & spends most of his time working with Virtualization, Cloud & other Enterprise IT based technologies, in particular VMware, EMC and HP products.
As well as on this site, you can find him on Twitter and Google+