TParams* strParams;
AnsiString   str = AnsiString("Insert Into TABLE1 (FIELD1, FIELD2) Values  (:one, :two)");

strParams = new TParams;
try{
    strParams->CreateParam(ftString,"one", ptInput);
    strParams->CreateParam(ftString, "two", ptInput);

    strParams->ParamByName("one")->AsString    = Edit1->Text;
    strParams->ParamByName("two")->AsString     = Edit2->Text;

    dm->sqlConnJP->Execute(str, strParams, NULL);
}
__finally{ delete strParams; }

이렇게 해 봐요.