VirtualBox silent install, detection method, remove balloon tips

This will:

• Install VirtualBox on 64-bit or 32-bit system
• Do nothing if another VirtualBox version is already installed

Grab the latest installer for windows:https://www.virtualbox.org/wiki/Downloads

I personally love to remove the balloon tips and do not let applicaition to distract you with updates.
That is why I added additional commands like:

"%programfiles%\Oracle\VirtualBox\VBoxManage.exe" setextradata global GUI/SuppressMessages "all"
"%programfiles%\Oracle\VirtualBox\VBoxManage.exe" setextradata global GUI/UpdateDate "never"

Complete silent install script: