PLT OF BE20 LINED UP WITH THE WRONG RWY DURING AN ILS APCH DUE TO USING AN OUTDATED CHART. HE; THE TWR CTLR AND THE CREW OF A B737 WAITING TKOF; NOTICED HIS MISTAKE IN TIME FOR A SIDESTEP TO THE ASSIGNED PARALLEL RWY.

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DSNDING INTO ONT ON THE ZIGGY 3 ARR; WE WERE GIVEN RADAR VECTORS FOR THE ILS RWY 26L ONT. WE INTERCEPTED THE ILS RWY 26L LOC AND PROCEEDED INBOUND ON THE ILS. I WAS VERY BUSY RUNNING CHKLISTS AND DOUBLECHKING THAT I HAD THE EFIS SET UP CORRECTLY; AS THIS WAS MY THIRD FLT AND FIRST ILS IN THIS NEW AIRPLANE. ON SHORT FINAL; TWR CLRED A FLT FOR TKOF ON RWY 26R. I LOOKED UP TO VERIFY I WAS ON THE CORRECT RWY AND TO SEE THE B737. WHEN I DID THIS; I REALIZED I WAS LINED UP FOR RWY 26R INSTEAD OF RWY 26L. AT THIS POINT; ON SHORT FINAL; I STILL HAD PLENTY OF ROOM TO SIDESTEP TO RWY 26L AND LAND. THE TWR CTLR AND B737 CREW REALIZED I WAS LINED UP FOR RWY 26R AT ABOUT THE SAME TIME I DID AND THERE WAS NO CONFLICT BTWN AIRPLANES. AFTER LNDG; I VERIFIED THAT I HAD INDEED HAD THE ILS RWY 26L APCH PLATE OUT AND THE LOC FREQ OF 109.7 IN THE NAV RADIO. AFTER DISCUSSING THIS WITH THE TWR; I LEARNED THAT THE FREQ FOR THE ILS RWY 26L HAD BEEN CHANGED TO 111.35 SOMETIME IN THE PRECEDING 6 MONTHS AND THAT I HAD USED AN OUT-OF-DATE APCH PLATE. THIS PROB CAME ABOUT BECAUSE I WAS IN A NEW AIRPLANE EQUIPPED WITH EFIS AND FMS THAT I WAS JUST BECOMING FAMILIAR WITH. I SPENT TOO MUCH TIME CHKING TO MAKE SURE I HAD THE EFIS SET UP CORRECTLY AND NEGLECTED TO IDENT THE LOC. AFTER LNDG; I FOUND THAT WHEN I HAD REVISED MY APCH PLATES I HAD NOT REMOVED THE OLD ONE AND JUST INSERTED THE NEW ONES BEHIND THEM. BECAUSE THE 3 OF US INVOLVED (MYSELF; THE TWR CTLR AND THE B737 CREW) WERE AWARE OF WHAT WAS HAPPENING AROUND US; SAFETY WAS NEVER COMPROMISED DURING THIS EVENT; BUT I HAVE LEARNED THAT LITTLE THINGS; SUCH AS CURRENT APCH PLATES OR IDENT A FREQ; CAN KEEP THINGS FROM GETTING TO THAT POINT IN A HIGH WORKLOAD ENVIRONMENT.