VirtualBOX setup after upgrading Kernel

>>>  - Run "sudo /etc/rc.d/vboxdrv setup", every time your kernel is upgraded,
>>>    to compile virtualbox driver modules for a new kernel version.
>>>  - Add your users to the vboxusers group:
>>>      gpasswd -a USERNAME vboxusers
>>>  - Customize your "/etc/conf.d/vboxdrv"; usually, defaults are OK.
>>>  - Add "vboxdrv" to DAEMONS array in your "/etc/rc.conf", if needed.
>>>  - If USB does not work for you out-of-the-box, add the following line
>>>    to your "/etc/fstab":
none /proc/bus/usb usbfs auto,busgid=108,busmode=0775,devgid=108,devmode=0664 0 0
Optional dependencies for virtualbox-sun
    alsa-lib: for ALSA support
    dkms: for building and loading vboxhost modules
    libgl: for shared OpenGL support
    libxt: for shared clipboard support
    mesa: for OpenGL support
    pulseaudio: for PulseAudio support
    python2: for VirtualBox SDK
    qt: for Oracle VirtualBox QT4 GUI on X-Window System
    sdl: for Oracle VBoxSDL and VirtualBox GUI on console
    vfuse: for mounting VBox (VDI/VMDK/VHD) disk images