A PA23 PLT ALMOST LANDS HIS ACFT GEAR UP AND GOES AROUND WHEN THE GEAR WARNING SOUNDS IN PARALLEL WITH A LOUD SCRAPING NOISE FROM THE TAILSKID AT LNK; NE.

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I WAS CLRED BY TWR TO LAND RWY 17L WHILE STILL 4-5 MI N OF LINCOLN. CHKLIST (LNDG) WAS COMPLETED UP TO; BUT NOT INCLUDING FLAPS; GEAR; AND PROPS. I COMPLETED THE APCH WITH SOME EXTRA PWR BECAUSE OF GUSTING WINDS APPROX 20 DEGS R OFF THE NOSE. I CLOSED THE THROTTLES SLOWLY. THE WARNING HORN SOUNDED AS I WAS FLARING FOR TOUCHDOWN. THE HT OF THE ACFT ABOVE THE RWY ALSO APPEARED TOO LOW (IN RETROSPECT -- VERY OBVIOUS). I THEN GLANCED DOWN AT THE GEAR LIGHTS; SAW THEY WERE NOT LIT AND PWRED UP FOR AN IMMEDIATE GAR (FULL THROTTLES). I THEN HEARD THE SOUND OF WHAT APPEARED TO BE THE TAILSKID SLIDING ALONG THE RWY. THERE WAS NO DEV IN DIRECTION OF TRAVEL OF THE ACFT; OR ANY ABNORMAL SENSATIONS THROUGH THE FLT CTLS. THE ACFT LIFTED OFF WITH NO VIBRATION EVIDENT. I WENT AROUND IN THE TFC PATTERN AND LANDED WITH THE GEAR DOWN THIS TIME. APPROX 1 INCH WAS GND OFF THE L PROP AND 1 BLADE WAS BENT FORWARD AT THE TIP. THE R PROP SUFFERED MINOR FLATTENING OF THE TIPS. THERE WAS A SLIGHT SCRAPE MARK ON THE TAILSKID; AND THE STEP WAS BENT BACK. NO DAMAGE WAS EVIDENT TO ANY SKIN; CTL SURFACES; OR OTHER PART OF THE ACFT. FACTORS CONTRIBUTING TO THE INCIDENT INCLUDE; 1) NON-STANDARD PATTERN (LONG FINAL); 2) FAILURE TO USE EITHER WRITTEN OR GUMPS CHKLIST ON SHORT FINAL. TURB (GUSTING AND WINDSHEAR) IN THIS CASE HELPED THE SIT BECAUSE I CARRIED EXTRA PWR AND ONLY 1/2 FLAPS. SUGGESTIONS TO PREVENT RECURRENCE: USE OF CHKLIST ON SHORT FINAL. CALL '3 GREEN' DURING RADIO CALL ON FINAL. HAVE TWR VERIFY GEAR DOWN AS PART OF CLRNC TO LAND.