How Do I Convert Cdc 8Bit(color palette) To 24Bit?

pDispDC	= new CDC;			
pDispDC->CreateCompatibleDC(pDC);
pOldDispBitmap	= pDispDC->SelectObject(pDOC->m_pBMPdisp);
pOldDispPalette	= pDispDC->SelectPalette(pDOC->m_DIB.m_pPalette, TRUE);
pDispDC->RealizePalette();
pDispDC->UpdateColors();
pOldCDCPalette	= pDC->SelectPalette(pDOC->m_DIB.m_pPalette, TRUE);
pDC->RealizePalette();
pDC->RealizePalette();
pDC->UpdateColors();

pDC->BitBlt(ScrPosZoom.x, ScrPosZoom.y, szCopyZoom.cx, szCopyZoom.cy, pDispDC, 0, 0, SRCCOPY);