Why do you need drivers it should be plug and play unless you are still connecting using USB which has not been supported for at least 3 years due to it being to slow.
You will be lucky to get 10Mb via USB and would be better advised getting a Network card fitted for a few pounds.
If you had received the Ambit 256 instead then that would only have had an ethernet port fitted, and we cannot specify which model you would have received, its a case of first off the shelf.
Here are the drivers for your modem as they are still available on the website but are totally unsupported by Virginmedia.
http://www.virginmedia.com/help/broa...sb-drivers.php
Snap Ben.
