hmmmm..... that's funny... I have almost the same sort of question....... "What do you have to do, if you don't want to select all the point (or faces) through the model,... just the ones on the surface you are looking at?..."
and,... powergod, I am trully sorry for invading your thread.... (I think this question is simmilar to yours, and is not worth making a new thread for.. )
thanx