You should be able to install WD SmartWare even when there are no Western Digital disk drives attached to your system. If the application does not run or install, then I would recommend a registry clean-up and ensuring Microsoft .Net FrameWork 4.0 Extended Profile is installed on your system.
You can download the latest version of WD SmartWare from the following link:
http://support.wd.com/product/download.asp?groupid=125&lang=en
