DURING A NIGHT CROSS-COUNTRY TRIP, THE PILOT NOTED THE FUEL LEVEL WAS GETTING LOW, SO HE ATTEMPTED A PRECAUTIONARY LANDING ON AN UNLIGHTED TURF AIRPORT. HE ATTEMPTED TO ACTIVATE THE RUNWAY LIGHTS BY USING THE ACFT'S TRANSMITTER, BUT WAS UNSUCCESSFUL. HE HAD SELECTED THE WRONG AIRPORT; SUBSEQUENTLY, HE WAS ALSO USING THE WRONG RADIO FREQUENCY FOR THAT AIRPORT. DURING FINAL APPROACH TO WHERE HE THOUGHT THE AIRPORT WAS LOCATED, THE ACFT STRUCK POWER LINES, THEN COLLIDED WITH THE TERRAIN. THE PILOT AND TWO PSGRS SUFFERED MINOR INJURIES; THE ACFT SUSTAINED SUBSTANTIAL DAMAGE.