ops, sorry, I called the power supply "font" that was just dumb error! hahaha in portuguese supply is "fonte" so...
here is the scheme! it's pretty obvious, but with an image is easier to help!
it SHOULD work like this!
at first install like any other PC, with keyboard and all the stuff, when you get it running and all the programs and stuff installed and working propperly, than you can go for touch screen only!