But you can use a tiny screw driver to wedge them off. I would make sure I put something like paper down under where you are going to put the screw driver so you don't scratch the dial.
Taking the stem out varies depending on which watch you have. On the pre-1963 models, you take the back off and lift up the part holding the stem in (which looks like a flat spring). The after 1963 models require you to remove the back and turn the screw holding the stem in a few turns before the stem comes out.