Setting up Sun VirtualBox 6 under Ubuntu 8.10 Intrepid « Reformed Musings
http://reformedmusings.wordpress.com/2008/12/10/setting-up-sun-virtualbox-6-under-ubuntu-810-intrepid/

none /proc/bus/usb usbfs devgid=46,devmode=664 0 0

How to install Virtual Box on Ubuntu Intrepid