Open the woofy.lxf file with Lego digital designer. If you dont have it, you can download it for free from: http://ldd.lego.com/ Once you opened the file click F7 to generate instructions. Due to the size and number of pieces the process will take about an hour or more, depending on your PC. Due to LDD limitations the power functions battery box, mini linear actuators, power functions lights and the old universal joint are improvised from standard bricks. Also as instructed on the attach.png picture you should attach the top plates to bottom bricks and attach the the linear actuator on the 3 stud long axle.. I used an old red differential (3712c01), but the newer 4 stud long one (9244a) should be enough. In my opinion the wolf should work with the AAA battery box (88000-1) instead of the rechargable one (x1962cx1). For any questions please write me an e-mail to: zblj87@gmail.com