[ubuntu] Upgraded to 12.04, can't find anything anymore

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http://ubuntuforums.org – Bs'd I went from 10.04 to 12.04, and I can't find anything anymore. I don't have at the bottom of my screen that taskbar, with which you can go places, I can't find the terminal, I can't find newly installed programs, I installed Xboard, can't find it. I do have that taskbar on the side, but it doesn't have many options. Also I don't know how to make launchers on my desktop. (Hardware)