NZ Max

Ok, Ive had the car for about 2 months now and I want to get into the spedo to wire up the od light to the sport light which is not hooked up to anything. so basically when od off light is ment to be on, the sport at the bottom will be. BUT, I can get one of the screws out, but the other one just spins and wont loosen. I thought of trying to somehow drill it out, but id probably damage something else. Any Ideas Are Welcome. Thanks all the way from New Zealand