VFR PC12 PLT WITH ZJX; ABOVE BROKEN LAYER; REQUESTS IFR CLRNC TO OCF RESULTING IN CONFUSION REGARDING WHEN AND IF IFR CLRNC WAS ACTIVATED.

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I WAS COMING BACK FROM A FLT TO TLH TO OCF. IT WAS VFR ON TOP OF A SCATTERED LAYER; WHICH TURNED TO A BROKEN LAYER WHEN I REACHED THE OCF AREA. SINCE I WAS ON FLT FOLLOWING WITH ZJX ALREADY; I ASKED FOR AN ILS INTO OCF KNOWING IT WOULD BE SAFER THAN TRYING TO SQUEEZE THROUGH A HOLE WITH OTHER VFR TFC BELOW THE BROKEN LAYER. ZJX AGREED AND GAVE VECTORS AND AN ALT (2200 FT). I ASSUMED I WAS IFR AT THAT POINT AND DSNDED INTO THE BROKEN LAYER ON THE VECTORED HDG. EVENTUALLY I WAS VECTORED ONTO THE LOC; TOLD TO MAINTAIN 2000 FT UNTIL ESTABLISHED AND CLRED FOR THE RWY 36 ILS AT OCF. AT THIS TIME I BROKE OUT; SAW THE RWY AND CALLED ZJX TO CANCEL IFR. AT THIS POINT ANOTHER VOICE CAME ON FROM ZJX TELLING ME I WAS NEVER ON AN IFR CLRNC AND THAT THEY ASSUMED I HAD JUST WANTED A PRACTICE APCH IN VFR CONDITIONS. I REPLIED I HAD ASSUMED I WAS UNDER IFR. THEY REPLIED 'NO' AND I SAID 'OK' AND PROCEEDED TO COMPLETE THE LNDG AT OCF. MAYBE INSTEAD OF JUST ASKING IF THEY COULD WORK ME IN FOR THE ILS AT OCF I SHOULD HAVE BEEN MORE SPECIFIC AND ASKED FOR AN IFR CLRNC INTO OCF INSTEAD. I FEEL ZJX SHOULD ALSO HAVE BEEN MORE SPECIFIC AND CLARIFIED THEIR THINKING THAT I WAS JUST ASKING FOR A VFR VECTOR FOR A PRACTICE ILS. AT ANY RATE; ALL TURNED OUT OK; BUT NEXT TIME I'LL MAKE SURE THERE'S NO CONFUSION ON MY PART AND ATC'S AS WELL.