Hello Steven,
Jani is absolutely right 
I'll happily help you to get your Velbus network working with OpenRemote (assuming you've got 2nd generation modules), but for the sake of all those that will follow in your footsteps, it's best to start a new thread.
I'll keep my eyes open for it.
In the mean time, this OpenRemote How-to for Velbus should be of use.
https://github.com/openremote/Documentation/wiki/Velbus
And this Velbus forum thread should answer all your questions about getting a JVelbusD server up and running.
(Although I've never used a Pi, but I'm assured it works well.)
http://forum.velleman.eu/viewtopic.php?f=81&t=6199&p=83759&hilit=JVelbusD#p83759
Good luck
Stuart
MDAR Ltd