I wouldn’t trust WD Smartware for backup requirements. Try using Microsoft SyncToy downloaded from here. (free) This will create a mirror image of folders you have choose to backup and can be accessed from any PC.
MS SyncToy
http://www.microsoft.com/downloads/en/details.aspx?familyid=C26EFA36-98E0-4EE9-A7C5-98D0592D8C52&displaylang=en11
The driver you’re looking for is SES driver. You can download it from here. It is now available on Windows automatic update.
SES Driver Download
http://download.wdc.com/smartware/WD_SES_Device_Driver.zip44