Bike Mechanics...? How do I remove the bearings from my rear hub?

I have taken out the axle and am stuck with pretty much the bear hub except for the cog side. I cant seem to get the ring out (ring can be described as the thing that holds in the bearing.) It looks like a pressed fit, as well it is corrogated? on the inner race. It also has two holes on the outer face. May be for a tool? Help.