You need to be able to model in Milkshape or blender, once you complete the model, add a joint named mount0 for the drivers seat. add hub0, hub1, hub2 and hub3 for the wheels so it looks like this.
[2----3]
[ ]
[ mnt0]
[0----1]
mnt0 is mount0. The drawing i made is in top view. The front of the car should be facing downward in top view. Tell me when you finish the model and joints and send it to me.