[beeje]

You would have to remove the entire window. There are screws on the inside around the outer rim of the window. Removing these will separate the window into 2 halves. 1 inside and 1 outside. I personally would not remove them if you do not what you are doing. I would clean up the exterior around the window where they meet the side of the unit and caulk them with 100 percent silicon caulk. Im sure you can clean them up, but if you are not a good caulker, find someone that is, to recaulk them (its not as easy as it sounds)