Also if you haven't already get the latest FTDI drivers and install them, go into device manager and delete all 'hidden' usb serial ports (while the Arduino is disconnected) restart the computer and try plugging in the Arduino again)
Also if you haven't already get the latest FTDI drivers and install them, go into device manager and delete all 'hidden' usb serial ports (while the Arduino is disconnected) restart the computer and try plugging in the Arduino again)