FLC OF HS125 MADE APCH TO THE WRONG RWY AT PHX AND WAS ADVISED BY TWR CTLR OF MISTAKE AND SIDE-STEPPED TO ASSIGNED RWY AT 500 FT AGL.

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IN A BRAND NEW AIRPLANE; 215 HRS TOTAL; WITH BRAND NEW CHARTS WE DEPARTED OAK FOR PHX. WE CHKED NOTAMS; AND NOTED SOME ILS OUTAGES; BUT SINCE IT WAS DAYTIME AND FORECAST TO BE VMC AT OUR ETA WE MADE A GO DECISION. WE REVIEWED THE CHARTS AFTER GETTING ATIS AND BEFORE WE BEGAN OUR DSCNT; AND NOTED THAT OUR CHARTS SHOWED RWYS 8L/26R AND 8R/26L. THE ATIS SPOKE OF RWYS 7R; 7L; AND 8. AFTER SOME DISCUSSION WE CONCLUDED THAT THE RWYS HAD BEEN RENUMBERED SO THAT RWY 8L WAS NOW RWY 7L; RWY 8R WAS NOT RWY 7R; AND A NEW RWY HAD BEEN BUILT RWY 8/26 -- PROBABLY A SMALLER GA RWY. WE REQUESTED RWY 7L; WHAT WE THOUGHT TO BE THE NORTHERN MOST RWY -- CLOSEST TO THE FBO; BUT WERE ASSIGNED RWY 7R DUE TO DEPS. WE TUNED THE ILS RWY 8R; THINKING IT WAS THE SAME AS RWY 7R; CALLED THE RWY IN SIGHT; AND WERE CLRED FOR THE VISUAL APCH TO RWY 7R. AFTER BEING HANDED OFF TO THE TWR WE WERE CLRED TO LAND ON RWY 7R. ON A STABILIZED APCH TO THE OLD RWY 8R AT ABOUT 5 MI OUT WE COULD CLRLY SEE A SHORTER RWY TO THE S OF THE OLD RWY 8R THAT WE FIGURED WAS THE NEW RWY 8/26. AS WE PASSED ABOUT 700 FT AGL TWR CLRED AN ACR JET ONTO RWY 7L; AND A B737 BEGAN TO TAXI ONTO THE RWY THAT WE WERE PLANNING TO LAND ON. I QUERIED TWR; 'CONFIRM THAT ACR X IS CLRED TO LAND ON RWY 7R?' TWR REPLIED; 'AFFIRMATIVE. THAT'S THE ONE WITHOUT THE B737 ON IT.' BY THEN WE WERE AT ABOUT 500 FT AGL; AND COULD CLRLY SEE THE RWY NUMBERS. THE SHORTER RWY WAS RWY 7R. WE SIDESTEPPED TO RWY 7R USING NORMAL BANK ANGLES; AND LANDED UNEVENTFULLY. A CONTRIBUTING FACTOR TO THIS NEAR MISHAP WAS MY FAMILIARITY WITH THE PHX ARPT. I LEARNED TO FLY IN THE AREA; AND FLEW INTO PHX EVERYDAY FOR A COUPLE OF MONTHS SEVERAL YRS AGO. OUR COMPANY ALERTED ALL OF THE PLTS; AND HAD THEM CHK THE DATES OF THE ONBOARD CHARTS TO ENSURE CURRENCY.