A B742 CREW; FINDING THEMSELVES HIGH AND OVERSHOOTING FINAL; EXECUTED A GAR.

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WE WERE FLYING A CHARTER TO AN UNFAMILIAR ARPT THE PREFERRED RWY 17 WAS CLOSED. THE BEST AVAILABLE RWY WAS RWY 21 WITH NO INST APCH AND SIGNIFICANT TERRAIN ON EXTENDED FINAL. WE WERE KEPT HIGH BY CTR AND RELEASED BY APCH CTL AT APPROX 20 NM AND 10000 FT FOR A VISUAL APCH. OUR NORMAL FLYING INVOLVES VECTORS TO AN ILS AT ABOUT 15 DIFFERENT AIRFIELDS WITH AN OCCASIONAL RADAR VECTOR TO A VISUAL. THIS VISUAL REQUIRED SUBSTANTIAL MANEUVERING TO LOSE ALT AND ENTER A STANDARD 45 DEGS TO DOWNWIND FOR A L BASE. THIS IS A STANDARD VFR PATTERN; YET ONE I HAD NOT ACCOMPLISHED IN NEARLY 10 YRS. NEEDLESS TO SAY; I WAS RUSTY ON SOME OF THE FUNDAMENTALS. THE CREW WAS PREOCCUPIED WITH ANALYSIS OF THE PROPER TERRAIN CLRNC AND LOCATION OF THE BASE LEG. MEANWHILE; A STRONG S WIND CAUSED A DRIFT TOWARD THE RWY THAT WAS UNNOTICED. ABOUT 1/2 WAY ON THE BASE LEG/TURN TO FINAL; WE REALIZED WE WOULD OVERSHOOT THE RWY. WE LEVELED AND WENT MISSED APCH TO A R DOWNWIND AND UNEVENTFUL APCH AND LNDG. LESSON; DON'T FORGET THE FUNDAMENTALS ESPECIALLY ON LITTLE USED APCHS.