Has anyone worked with the lexus/toyota AVC LAN system?

I am trying to work out this stuff so i can maybe use my stock nav screen to control an XBOX with XBMC loaded on it.

Here are a few links:

http://indashpc.org/new/adapters/car2pc-toy.html

http://www.softservice.com.pl/corolla/avc/avclan.php
http://acurazine.com/forums/showthread.php?t=346909
http://www.softservice.com.pl/coroll....php?p=641#641

What i would like is connect into the AVCLAN and then interface the usb output from the adaptor into an xbox and re write the scripts to work with the screen as per the link below:

http://www.xbmc.org/forum/showthread...sb+touchscreen

Does anyone know anything about these mouse drivers or calibration or anything about the avc lan interfaceing??