I am using VirtualBox 4.2.16 on Mac OSX Mountain Lion to install Windows 7 Professional (for class). When I start the installer it stops when it searches for devices to install the drivers from. Windows is able to see the USB device but is not able to see the Driver Software on the device. I have installed the driver software on the USB using BootCamp Assistant. So when I search for devices I see the USB but when I search through the USB to find the driver software it can only see the folders on the USB. Thanks.