BE20 FLT CREW BECOMES DISTR BY THE TA'S ON APCH TO PHX; LNDG ON THE WRONG RWY. ERROR RECOGNIZED ONLY DURING CONFERENCE WITH TWR.

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I LANDED ON THE WRONG PARALLEL RWY AT PHOENIX SKY HARBOR. THE FLT HAD BEEN ROUTINE AND ATC WAS BUSY WITH MODERATE TFC IN VFR CONDITIONS. WE WERE INBOUND FROM N AND ATIS WAS ADVISING TO EXPECT RWY 26. APCH CTLR WAS NICE ENOUGH TO OFFER A LNDG ON THE L SIDE OF THE FIELD IF IT WOULD HELP AND I AGREED WITH THE OFFER. AS WE WERE BEING VECTORED; APCH DSNDED US TO 5000 FT AND ADVISED TFC; AN AIRBUS TURNING FINAL FOR RWY 26; AND ADVISED OF A B727 ON PARALLEL APCH THAT I WAS TO FOLLOW. I RPTED THE AIRBUS IN SIGHT; BUT NOT THE B727. APCH CONTINUED TO VECTOR FOR THE VISUAL. AFTER CLRING THE AIRBUS; ATC CLRED ME FOR A VISUAL AND INSTRUCTED ME TO MAINTAIN 170 KTS UNTIL THE PWR PLANT; AND SWITCHED ME TO THE TWR. THE TWR INSTRUCTED THAT I WAS CLRED TO LAND ON RWY 25L AND ADVISED 'CAUTION WAKE TURB; YOU ARE 2 MI IN-TRAIL OF B727.' THIS IS WHERE THE ERROR BEGAN. I SAW THE B727 AND ADJUSTED MY FLT PATH TO REMAIN ABOVE HIS GLIDE PATH; AND PLANNED MY TOUCHDOWN BEYOND HIS TOUCHDOWN POINT TO CLR HIS WAKE; WHICH I DID. THE PROB WAS THE B727 LANDED ON RWY 25R. LCL CTLR SEEMED TO BE CONDUCTING BUSINESS AS USUAL; INSTRUCTED ME ON WHICH TXWY TO EXIT THE RWY AND CONTINUED TO INSTRUCT MY TAXI UNTIL XING RWY 25L AND SWITCHED ME TO GND CTL. AT THAT POINT; I WAS INSTRUCTED TO CALL CONCERNING A POSSIBLE PLTDEV. NO DOUBT; I WAS IN ERROR. FACTORS THAT CONTRIBUTED TO THIS INCIDENT WERE: 1) BEING UNFAMILIAR WITH THE AREA; 2) THE RWY CONFIGN; RWYS 26; 25R; 25L; 3) ATTEMPTING TO ANTICIPATE AND PLAN AHEAD TO MEET ATC'S NEEDS; 4) I WAS HEARING INCORRECTLY AND REPLIED 'CLRED TO LAND RWY 25L' AND THOUGHT I WAS CORRECT IN FOLLOWING THE B727 TO RWY 25L; AND 5) LCL CTL DID NOT CHALLENGE THE APCH OR INSTRUCT ME TO 'GO AROUND.' WHEN I CALLED THE TWR AND SPOKE WITH THE SUPVR; I HAD NO IDEA WHAT THE CALL WAS CONCERNING. I WAS CONVINCED THAT I HAD FOLLOWED MY CLRNCS CORRECTLY. IT WAS AFTER THE DISCUSSION I REALIZED MY ERROR. I AM NOT COMPLETELY SURE HOW THIS SIT COULD TOTALLY BE AVOIDED IN THE FUTURE. MAYBE PHRASEOLOGY CHANGES COULD HELP. 'CLRED TO LAND RWY 25L; USE CAUTION; WAKE TURB; ARRIVING B727 ON PARALLEL RWY 25R;' RATHER THAN YOU ARE 'IN-TRAIL.' I INTERPRETED 'IN-TRAIL' TO MEAN FOLLOWING. MY ERROR. ANOTHER POSSIBILITY COULD BE THE RWY NUMBERING; RWYS 25L; 25C; 25R. COULD THIS PREVENT CONFUSION? THE SIT COULD BE TRACED BACK MAYBE TO APCH ATTEMPTING TO POINT OUT THE B727 TO FOLLOW FOR THE VISUAL AND THE AIRBUS; POINT OUT; THAT WAS ON APCH FOR RWY 26.