Actually you can just go to http://rhinoart.info and download the complete definition with the VB component.
The VB script is absolutely basic level, it just splits the string.
Hope you find it useful.
Hi Jeff, I've jsut added you as a friend.
I saw your comment on FireFly: I've just used FireFly for connecting a nunchuck to Arduino, and added a VB component in the GH definition.
If you want I can send you the VB code, that is the easiest way to format strings coming from Arduino.