Greetings...I am trying to upgrade my MBP memory to 4gb. When I try to remove the 3 small screws in the battery compartment to expose the memory slots...the 3rd screw won't budge. I was using a Phillips 000 precision screw driver. The 1st 2 unscrewed fine. The 3rd does not budge. Now it appears stripped. Has any other members experienced this? Desperate for suggestions. Thanks in advance.