For my AD9956-VCO/PCBZ eval board, I installed AD9956Setup220.127.116.11-FullInstall.exe downloaded from analog.com on a PC running Windows XP. Attaching the eval board USB connector to the PC prompted the PC to search for but fail to find any suitable USB driver. Installing on a PC running Windows 7 produced the same result. Without the USB driver, the AD9956 application starts up but fails to connect to the eval board. Where can I locate the USB driver for this eval board?