This thread shows the VRPN client settings that are necessary to get the wand data directly into Vizard.
However, rather than connecting to the wand in this way, I would suggest using vizconnect to set up a corner cavern configuration script. You can add the PPT wand input from the inputs tab in vizconnect. Go through the
vizconnect tutorials for a general understanding of how to use it. There is a preset option for PPT corner cave that you can select if you're running both walls off a single machine. If each wall is run by a separate machine you'll need to use the advanced section of vizconnect to configure the trackers,display, wand etc.