Comment 15 for bug 95277

Sorry to be asking such a noob question, but I have been unable to figure out how I can copy the firmware file dvb-usb-dib0700-01.fw to the lib/firmware/2.6.20-15-generic folder. I keep getting told that I don't have permission to copy to a root folder? Obviously need to do this so that Ubuntu Feisty will recognise my Winfast DTV Dongle. Would somebody mind taking me through the steps I need to take? Thanks.