I've received advise to screw the floor with screws and that should stop the squeaks... this was done, but the floor stills squeaks... what is my next option to fix this problem, I am thinking of selling and trying to fix the place up, please help.
Assuming you can not get to the underside of the floor, nails or screws ARE the best answer. However first you need to find a floor joist and which direction it is oriented under your floor. Once you are CERTAIN you have found a floor joist, others should be 16 inches on center away. Install nails (generally finish nails) or screws about 2 inches apart along the joist
if the floor still squeaks after being screwed down tightly the floor joist is cracked along the length and to fix that you will need to be able to get to the under side of the floor ceiling sheet rock is cheap and easy to replace locate the bad area cut open the ceiling find the bad joist or joists and nail new ones right to the side of the old ones before you slide them into place use liquid nails and glue the top edge to the under side of the floor then you can put the ceiling back in and rest easy knowing it wont ever squeak again
dont laugh i read it in a magazine. get a turkey baster put baby powder in it then squirt in the spaces between the floorboards,stair ways. (any openings) good luck!
