You can put the obj file anywhere. To use the morph you load the P4 nude woman then click to select the head, then go up to to the menu item Object....load morph target. Then find the Karolhead.obj, select it and then name it if you want to something instead of shape 1, then click OK. Then set the new morph dial that appears on the head to 1.0. Then change the texture to the skin tex. You can then save it as a new character if you wish. Hope that helps.