vvv to pd to arduino

hi there

I am trying to get video tracking info form vvvv to pd to arduino.
I want to control dc motors in an angle that is determined by the video tracking

so I managed to get the angle-info from vvvv to PD, now I want pd to transport it to my arduino but I cant get
clear how to do that. I am using the hansrudolfsteiner ( http://www.arduino.cc/playground/Interfacing/PD ) stuff but have a few questions.

– i sent the data from vvvv to pd with the netsend/receive stuff, where do i connect that to a digital pin so the changing value gets transported to my arduino mega
–how can I read that digital pin so I can use it in my arduino program, do I really need to use the whole firmata patch? or can this be done easier? because I only need to read 1 pin… and I need my other pins for output

if somebody knows something about this, thanx in advance…