A PA28 PLT INITIATED AN APCH TO ONE ARPT AFTER ATC HAD CLRED HIM FOR AN APCH TO ANOTHER.

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IFR IN IMC TO N89. ONLY HAD GPS APCHS; ACFT DOESN'T HAVE IFR-CERTIFIED GPS. FIRST TIME IN THIS AREA. ROUTING UP V162 TO HUO AT 5000 FT IN MOD TB. N89 IN VALLEY WITH STEEP SIDES; BEYOND N82; NEITHER HAS AWOS. SO OBTAINED 'SULLIVAN COUNTY' AWOS ON 134.02-C/BASE 2500 FT. ELECTED TO FLY VOR/DME TO 'SULLIVAN COUNTY-WURTSBORO' (N82). MADE THIS DECISION 10 MILES BEFORE HUO; ADVISED NYC APCH OF INTENT TO FLY VOR/DME TO 'SULLIVAN COUNTY;' GET BELOW C/BASE; THEN VFR TO N89. ATC CLEARED ME FOR VOR/DME APCH TO 'SULLIVAN COUNTY.' AFTER PASSING HUO; FLEW 039 RADIAL AS CHARTED; STARTED DSCNT TO 2000 FT; KNOWING I WOULD BREAK-OUT AROUND 2500 FT. DSNDING THRU 3500 FT IN IMC; APCH QUERIED POSITION; STATED I WAS N-E OF HUO; SHOULD BE ON THE 344 DEG RADIAL FOR 'SULLIVAN COUNTY;' SAY INTENTIONS. I REPLIED THAT I WAS CENTERED ON 039 DEG RADIAL; ON VOR/DME APCH TO WURTSBORO; ALSO NAMED SULLIVAN COUNTY ON MY APCH PLATE. APCH REALIZED I WAS DSNDING TO WURTSBORO; AND RE-CLEARED ME WITHOUT HASSLE. BROKE OUT AT 2900 FT; CONTINUED VFR TO N89. CHECKED APCH PLATES; ENROUTE CHARTS; AFTER FLT. COMMERCIAL CHART HAS VOR/DME TO 'MONTICELLO-SULLIVAN CO;' 'MONTICELLO;''WURTSBORO-SULLIVAN COUNTY.' L25 SHOWS 'MONTICELLO;' 'SULLIVAN CO INTL;' AND 'WURTSBORO-SULLIVAN COUNTY.' NYC SECTIONAL SHOWS SAME. 'FIRST TIME IN AREA' PLT IN IMC; CONVERSING WITH NYC APCH ABOUT 'SULLIVAN COUNTY;' DIDN'T REALIZE THERE ARE TWO. TIP-OFF WAS AWOS FOR WRONG ARPT; BUT IN HEAT OF MOMENT (INCL DEFECTIVE SECOND VOR AND GPS); I LEFT THAT TIP-OFF UNDISCOVERED. THIS IS A TRAP WAITING TO SNARE UNSUSPECTING PLTS. SUGGEST THESE ARPTS ARE DISTINGUISHED BY ATC USING UNIQUE CITY NAMES; NOT NAME THAT IS SHARED BY 2 ARPTS.