Read Wacom Tablet information on Arduino

It is a Su-13W02E-03A digitizer from a tablet pc. It does support both USB and Serial data, so I can use whatever is easier. I am going to build a breakout board for the digitizer today to try and read data with Arduino. Would a Serial.println (DigitalRead(7)) work?

I am pretty new to Arduino and Serial communication, so any help is appreciated