답변 감사합니다. ^^

TPaletteEntry    stPalEntry[256];

TGIFImage *lpGIF;

lpGIF       = new TGIFImage();
lpGIF->LoadFromFile(pFileName);

lpBitmap    = new Graphics::TBitmap();
lpBitmap->Assign(lpGIF);

GetPaletteEntries(lpBitmap->Palette, 0, 256, stPalEntry);

----------------------------------------------------------
.... GetSystemPaletteEntries()를 위의 것으로 바꿨고요..

typedef struct
{
     TLogPalette     lpal;    <= 왜 요게 안먹히는지는모르겠네요..
     TPaletteEntry   Entry[256];
} LogPal;