custom 3dsmax9 headshape ~ help!

i edited a headshape using 3dsmax plugin, intending to use it for a created player. the problem im having is the shape of the eyes. i tried looking at different headshapes and they all seem to have same shape for the eyes, yet in-game they are all different for each player. so i guess the question is, where do i edit the eyes' shape, in 3dsmax or in the cf itself? pls help me if you can.