Weight painting hidden verticies

Is there a way to grab hidden vertices with the paint tool?

My problem is I paint the hand and associate it with the bone, but the hand wont move. Is there a way to just highlight a portion of the model and weigh everything, instead of messing with the camera angle and hoping i have everything highlighted?

http://img380.imageshack.us/img380/979/poseproblemkv9.jpg