Hi Peter,

I replied to you via email last week. It must have been marked as spam.
Anyway, here's the reply I sent:

Hi Peter,

It sound like the cable emulates an (old-style) game port and it's missing drivers. Unless you know exactly what brand and type the cable is, it's almost impossible to find the drivers unfortunately. And even if you know the brand and type, if you're currently running Windows 7 or 8, there probably aren't any drivers available.
The simplest solution is probably to buy a dedicated e-sky or Dynam dummy USB controller, or if you're a Hobbyking fan:
http://hobbyking.com/hobbyking/store...m_Mode_2_.html
or
http://hobbyking.com/hobbyking/store...m_Mode_1_.html

You'll probably be able to find a suited USB cable for your transmitter as well, but since I don't have a Futaba, I can't guarantee which one works.

Hope this helps.

Kind regards from Belgium,
Davy