It has been a couple of years since I played with this so I have not kept up with the new stuff.
I think I was using the Vinculum Firmware Customiser (V1.1b) found here
http://www.ftdichip.com/Firmware/VNC1Ltools.htm


When the data logger is plugged into a PC is the software needed to read it or can it be accessed as a drive? If it can not be accessed as a drive I do not think the VDIP will help.