Sony Ericsson USB Signed Drivers

Download and install the USB drivers and you'll be able to set up a communication link between your PC and phone via the USB cable.
It is highly recommended to always use the most recent driver version available. Do not forget to check with site as often as possible in order to stay updated on the latest drivers, software and games.
Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.
Latest version of Sony Ericsson USB Drivers can be found in Here