With the Indicator-Virtualbox indicator applet, you can in an easy and rapid way to launch your virtual machines (virtual operating systems) directly from the Ubuntu upper panel, no need to launch VirtualBox.
Before installing this indicator applet, make sure VirtualBox is well installed in your system. To install Indicator-Virtualbox on Ubuntu 11.04/10.10/10.04, launch the Terminal and issue these commands:
sudo add-apt-repository ppa:michael-astrapi/ppa
sudo apt-get update
sudo apt-get install indicator-virtualbox
You can then start it via the dash or simply run it with this command (Alt+F2):