@Scott: Are you sure about this? I thought that the Zoop didn't have gauge mode. Neither did the Gekko.
FWIW, the Gekko is directly downloadable (no patches required) so long as you use the Mac OS and import the profiles into MacDive.
Your correct, I just looked at the specs. Zoop dose not have gauge mode. Not sure where I got that from, must of been an internet forum somewhere.