Arduino Motor Shield R3 and Circuits@home USB Host Shield

Hello all,

I am trying to build a Wiimote controlled robot using the Arduino Motor Shield R3 and Circuits@home USB Host Shield. I have found that they are not entirely compatible, but I would like to rewire one of them to make them compatible. Can someone help me with how to go about this? I don't want to purchase a new shield or anything to do this as I have spent my budget already and the box that I am using only supports three layers including the Arduino UNO.