AN LTT CREW; TAXIING FOR TKOF AT YIP; CROSSED 2 PARALLEL RWYS WITHOUT CLRNC.

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NOV/WED/01 AT YIP. SEVERAL EXCHANGES WITH CLRNC; SIC COMMUNICATING; TO OBTAIN CLRNC AND ALSO SEVERAL EXCHANGES WITH GND CTL FOR TAXI INSTRUCTIONS. I UNDERSTOOD THAT WE WERE TO TAXI VIA RWY 9L FOR DEP RWY 27R. THIS; HOWEVER; TURNED OUT TO BE IN ERROR. I WAS TO TAXI VIA RWY 9L FOR DEP ON RWY 23R. NO PARALLEL TXWYS EXIST; SO MUST TAXI ON A RWY WITH PRE TAXI CHKS AND PROGRAMMING FMS. TAXIED ACROSS THRESHOLD END OF RWY 23R&L; THUS; A RWY INCURSION SIT. GND CTL INFORMED THAT I HAD TAXIED ACROSS ACTIVE RWYS. STATED THAT I THOUGHT THAT I WAS CLRED FOR TAXI FOR A RWY 27R DEP (WAS ACTUALLY RWY 23R). WAS ASKED TO DO 180 DEG TURN WHEN READY FOR TKOF. WAS CLRED TO DEPART ON RWY 23L. AT UNFAMILIAR ARPTS; ESPECIALLY WITH LESS THAN USUAL RWY/TXWY LAYOUTS; MAYBE CLARIFY INSTRUCTIONS AN ADDITIONAL TIME SO THAT INADVERTENT INCURSIONS CAN BE REDUCED. SUPPLEMENTAL INFO FROM ACN 530457: I WAS TOLD TO PROGRAM ALL THE WAYPOINTS INTO THE FMS. WHILE DOING THIS; MY HEAD WAS DOWN AND INSIDE. THE NEXT THING THAT HAPPENED WAS I HEARD GND CALLING AND ASKING IF WE WERE ON GND CTL FREQ. THE PIC RESPONDED WITH 'YES.' THE CTLR THEN SAID WE HAD TAXIED ACROSS AN ACTIVE RWY. I DISCUSSED INCIDENT WITH AVIATION DEPT HEAD. FROM NOW ON; ACFT DOES NOT MOVE UNTIL FMS IS PROGRAMMED -- PERIOD. IF AT UNFAMILIAR ARPT; ASK FOR PROGRESSIVE TAXI UNLESS COMPLETELY SURE OF ARPT TAXI DIAGRAM. WOULD SUGGEST THAT IF GND CTL OBSERVES AN ACFT APCHING A RWY AT NIGHT AND THE ACFT WAS TO HAVE TURNED ONTO A TXWY PRIOR TO THE RWY; IT SEEMS AS THOUGH THEY COULD ISSUE A QUESTION CALL; NOTWITHSTANDING THE UNDISPUTED FACT THAT IT IS THE ACFT CREW'S RESPONSIBILITY TO DO A CORRECT TAXI OP.