Trevor is right... a polarizer should knock out that glare and give you beautiful blue skies to boot. If your camera has a threaded filter adapter on the lens, you can find out the size and buy a filter at bhphoto.com or at your local photo specialty shop. Frequently the size is marked on the side of the lens. It's usually something like "37mm" or "55mm." If it is marked as something like "28mm-60mm" that is the focal length of your lens, not the filter diameter. If it is not marked, you can google your camera model and "filter diameter." If your camera does not have a threaded fitting, you can frequently find generic adapters to fit your camera. Bhphoto sells them, but you may need to do a little google work to figure which one works best for your camera.