Hi Izibizi,
I assume you have a 36 volt actuator. All you do is connect the LNB cable through the V-Box to the Dreambox.
The V-Box is transparent to the Dreambox and you just control the dish position by the dreambox controls.
If you have a diseqc motor then I believe the dreambox will control it direct without a V-box but I cannot confirm that because I operate a 36 volt jack.