It worked out of the box with the provided dll in a plugin. See the printvals example in the vrpn source for infos how to implement it (it`s really easy).
My problem was that I was in need of a other vrpn version, so I had to recompile VrpnNet with another version of VRPN, it was really hard to find the source of VRPN (the old releases) but I found them on an ftp server: ftp://ftp.cs.unc.edu/pub/packages/GRIP/vrpn
After recompiling VRPN.net to the right version everything is working great.
some people know i have a knack for exotic input devices.
just scanned the list, and found GameTrak in it.
we still have one and a half in the office and i could never access the second analog-stick-thingy nor the foot mine
of course a natural point / optitrack implementation could be even more useful for vvvv heads, just in case you are looking for ideas :)
We used Optitrack within vvvv using their NatNet .net library, it was pretty straight forward (sample code is part of the download which can be rewritten as a node quite easily)
