I hadd the same problem and here is what I did to remedy it (sorry I used =
assembly).  It is set up for a specific aplication, but you could change =
the bit to meet your needs

;************************************************************
        LIST P=3D18F452
        #include <Pic.inc>=09
; This file has been hacked to be compatible with our programmer,
; There was a problem with the way that the header has the control =
registers set up,=20
; It had them inverted from the values that were actually to be programmed =
in. =20
; Our work around was to set one of the variables to the actual value that =
we wanted=20
; to be in the whole register, and just use that variable, thus, the =
variables that=20
; you see below bear no relation to the actual configuration of the =
control registers
; They are now simply dummy names for the assembler.
; The most up-to-date copy of the PIC.INC is going to be kept in the =
directory
; Y:\Users\Radar\Programming\PIC Microcontroller\PIC.INC

        __CONFIG  _CONFIG1H, _HS_OSC_1H         ;***** NOTE ******
        __CONFIG  _CONFIG2L, _PWRT_ON_2L        ;* If you want   *
        __CONFIG  _CONFIG2H, _WDT_OFF_2H        ;* to change a   *
        __CONFIG  _CONFIG3H, _CCP2MX_ON_3H      ;* Configuration *
        __CONFIG  _CONFIG4L, _LVP_OFF_4L        ;* Register,     *
        __CONFIG  _CONFIG5L, _CP0_OFF_5L        ;* do so in the  *
        __CONFIG  _CONFIG5H, _CPB_ON_5H         ;* PIC.INC file  *
        __CONFIG  _CONFIG6L, _WRT0_OFF_6L       ;* or in the     *
        __CONFIG  _CONFIG6H, _WRTC_OFF_6H       ;* Device config *
        __CONFIG  _CONFIG7L, _EBTR0_OFF_7L      ;* on the        *
        __CONFIG  _CONFIG7H, _EBTRB_OFF_7H      ;* Programmer    *
                                                ;*****************

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