C210 PLT TURNED FINAL FOR THE WRONG RWY DURING A VISUAL APCH DUE TO BECOMING CONFUSED WITH INFO FROM A GPS MAP DISPLAY. PLT RECOGNIZED HIS ERROR AND ADJUSTED HIS HDG TO THE CORRECT RWY.

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WE WERE ON AN IFR FLT PLAN FROM LEE TO APR. WE HAD FILED DIRECT LAL; DIRECT RSW; DIRECT APF. ENRTE; THAT CLRNC WAS CHANGED TO RADAR VECTORS TO APF; AND AGAIN LATER TO DIRECT QUNCY; DIRECT RSW; DIRECT APF. SINCE WE HAD A NEW BENDIX/KING PANEL MOUNTED MOVING MAP GPS INSTALLED AND HAD NOT BECOME PROFICIENT IN ITS USE; WE ASKED FOR VECTORS TO QUNCY; WHICH WE RECEIVED. WE BACKED UP THE VECTORS WITH 2 VORS TO NAV TO THE INTXN AND ALSO ENTERED THE INTXN IN THE NEW GPS AS BACKUP. WE ALSO HAD A MOVING MAP GPS INSTALLED ON THE PLT YOKE. AS WE APCHED THE INTXN; WE QUERIED ZMA TO VERIFY THAT WE WERE ON THE CORRECT TRACK WHICH THEY CONFIRMED. WE CONTINUED ENRTE AND AS WE APCHED APF WE WERE CLRED FOR THE VISUAL APCH TO RWY 5. WE CONTACTED THE TWR WHICH ASKED US TO RPT 3 MI OUT; WHICH WE DID; AND THEN THEY CLRED US TO LAND ON RWY 5. AS WE WERE MANEUVERING IN THE PATTERN TO ENTER A DOWNWIND FOR RWY 5; WE WERE AGAIN DISTR BY THE NEW GPS. WHILE ATTEMPTING TO FOLLOW ELABORATE NOISE ABATEMENT PROCS WITH THE AID OF THE GPS; WE MISINTERPED THE GPS DATA AND BEGAN TO TURN FINAL TO THE WRONG RWY. AFTER CONFIRMING OUR HDG WITH THE HSI WE IMMEDIATELY RECOGNIZED OUR MISTAKE AND CORRECTED OUR TURN; RESUMED A NORMAL PATTERN AND LANDED WITHOUT INCIDENT ON RWY 5. THE CONFUSION CREATED WHILE APCHING QUNCY AND WHILE APCHING APF WAS IN PART DUE TO THE UNFAMILIARITY WITH THE NEW EQUIP AND PERHAPS AN OVER RELIANCE ON THE GPS EQUIP OVER CONVENTIONAL TECHNIQUES.