Issue the following commands inside a terminal:
echo 'deb http://ppa.launchpad.net/openoffice-pkgs/ubuntu jaunty main' >> /etc/apt/sources.list
gpg --keyserver keyserver.ubuntu.com --recv 60D11217247D1CFF gpg --export --armor 60D11217247D1CFF | sudo apt-key add -
sudo apt-get update sudo aptitude dist-upgrade
