By http://www.virtualbox.org/wiki/Linux_Downloads 1. Add the following line /etc/apt/sources.list: deb http://download.virtualbox.org/virtualbox/debian lucid contrib non-free 2. Add and register the Oracle public key: wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add - 3. To install VirtualBox: sudo apt-get update sudo apt-get install virtualbox-4.0 4. Add right for current user: System / Administration / Users and groups choose Users Additional parameters / User's rights / Check - VirtualBox