Do customers running Windows XP or Windows 2000 need a new USB storage driver now that USB 2.0 is available?
No. Microsoft has provided a new miniport (usbehci.sys) driver and an updated usbport.sys and usbhub.sys driver to support USB 2.0 on Windows 2000 and Windows XP. For more details see http://www.microsoft.com/whdc/system/bus/USB/default.mspx. Client drivers (such as usbstor.sys) will continue to function on this new USB 2.0 stack.