So OK here it is.

I am thinking of adding the VIA ARTiGO Pico-ITX Builder Kit to my Avic F700BT to network between them

1- Will I b able to network is there a software that will render the usb port full I/O capable

2 -Will I b able to use the Avic as a screen and therefore as an input device

3-Will I b able to use it in reverse meaning will I b able to input commands on my via and send them to the Avic

It seems that it will be possible with some modification of the usb I/O protocol and registry edits but who I am to know

so no one know anything?

I have try to search all over the net and this site but with no success any input will b great

For the most part, all of them are "no". If you want a carputer, build a carputer. Otherwise, if you don't even know the answers to the questions, you wouldn't even know where to start and it would be a lost cause trying to help.. it would take dozens of paragraphs to explain. The time put into trying to hardcore-mod the AVIC into something that still pretty much sucks isn't worth the effort.