Last year we put in an 5200 btu window air conditioner. Now whenever it rains the paneling inside the bedroom leaks and gets the floor wet...etc. Any ideas on how to stop the leaks from coming inside?

I believe my problem is with the top hinge because whenever my dh tightens the screws it fixes it somewhat for a bit. I have to pick up the door by the handle in order to close it, if I don't it just slams into the frame. The door is solid (very heavy) and only four years old. I think the frame is just old (the house was built in 1923) and because we put a new door on it just can't handle it. I've read the section for fixing a door that won't latch and I want to do this: "Tighten any lose hinge screws. If the hole is stripped and the screw won't tighten, remove the screw and drill a deeper pilot hole for a new 3-in. screw that will extend into the framing behind the jamb. Also use this approach if the screws are tight but you still need to raise the handle side of the door so the latch will engage." But I don't understand what pilot hole is. All advice is welcome. Thanks! Jen