try using two paper clips. Bend out one end of one paper clip into an L shape. Leave the other paper clip intact.Push the pointed end of the L into the bottom of the keyhole. Place the intact paper clip into the portion of the keyhole above where the L is resting. This will push up the pins inside the lock that match up to the appropriate key.As you pull out the top paper clip, use the L to turn the lock in the direction you would when using the correct key. When the right amount of pressure is applied at just the right time, you will be able to turn the knob and open the door.