Its pretty easy really...
Have you had a look at the 4D Systems forum, and the area for Arduino?
There are quite a few examples in there where people have asked questions and examples have been provided promptly.
Also have you looked at the App Notes they provide? There are ones specific to the Arduino talking to ViSi-Genie.
http://www.4dsystems.com.au/appnotes/
Check out 4D-AN-P4017 , 4D-AN-P4018, and 4D-AN-P4019 for a start...
Then wonder over here and have a look. Couple of really good examples for people getting started in there:
http://4d.websitetoolbox.com/?forum=272259
WanaGo