I have created a landscape using GL_QUADS,
I have managed to get the camera to move around the map & zoom in & out.
I now wish to rotate the map at the point the
camera is looking at.

each time I try this using glTranslate & glRotate it is always the camera that is rotated here is the OnDraw function, I am using MFC(filthy heathen!)

please help, I dont want to get into DD7.

void CMapCellClassView::OnDraw(CDC* pDC)
{
CMapCellClassDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);

glLoadIdentity() ;

glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();

gluLookAt(left_right, zoomy, back_forward + zoomz , left_right, 0, back_forward, 0.0, 1.0, 0.0);

glLineWidth(1.0);

glPolygonMode(GL_FRONT, GL_FILL);
glPolygonMode(GL_BACK, GL_FILL);

glBindTexture(GL_TEXTURE_2D, id);

for(int x = 0; x < pDoc->m_MapCellManager.m_MapCellArray.GetUpperBound(); x++)
{

CPoint3D MidPoint = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_MidPoint);

CPoint3D TopLeft = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexTopLeft);

CPoint3D TopMiddle = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexTopMiddle);

CPoint3D TopRight = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexTopRight);

CPoint3D MiddleRight = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexMiddleRight);

CPoint3D BottomRight = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexBottomRight);

CPoint3D BottomMiddle = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexBottomMiddle);

CPoint3D BottomLeft = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexBottomLeft);

CPoint3D MiddleLeft = pDoc->m_MapCellManager.m_MapPointsArray.GetAt(
pDoc->m_MapCellManager.m_MapCellArray.GetAt(x)->m_VertexMiddleLeft);
glColor3f(0.0, 0.5, 0.0);

::glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(TopLeft.x, TopLeft.y, TopLeft.z);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(TopMiddle.x, TopMiddle.y,TopMiddle.z);

glTexCoord2f(1.0f, 1.0f);
glVertex3f(MidPoint.x, MidPoint.y,MidPoint.z);

glTexCoord2f(1.0f, 0.0f);
glVertex3f(MiddleLeft.x, MiddleLeft.y, MiddleLeft.z);

::glEnd();

::glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(TopMiddle.x, TopMiddle.y, TopMiddle.z);

glTexCoord2f(0.0f, 1.0f);
glVertex3f(TopRight.x, TopRight.y, TopRight.z);
glTexCoord2f(1.0f, 1.0f);

glVertex3f(MiddleRight.x, MiddleRight.y, MiddleRight.z);
glTexCoord2f(1.0f, 0.0f);
glVertex3f(MidPoint.x, MidPoint.y, MidPoint.z);
::glEnd();

::glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(MiddleLeft.x, MiddleLeft.y, MiddleLeft.z);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(MidPoint.x, MidPoint.y, MidPoint.z);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(BottomMiddle.x, BottomMiddle.y, BottomMiddle.z);
glTexCoord2f(1.0f, 0.0f);
glVertex3f(BottomLeft.x, BottomLeft.y, BottomLeft.z);
::glEnd();

::glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(MidPoint.x, MidPoint.y, MidPoint.z);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(MiddleRight.x, MiddleRight.y, MiddleRight.z);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(BottomRight.x, BottomRight.y, BottomRight.z);
glTexCoord2f(1.0f, 0.0f);
glVertex3f(BottomMiddle.x, BottomMiddle.y, BottomMiddle.z);
::glEnd();

}

if( FALSE == ::SwapBuffers(m_pDC->GetSafeHdc() ) )
{
::AfxMessageBox("error");
}

}

You could glTranslate() so that the point you want to rotate around is at 0,0 (the origin) then glRotate() as appropriate and glTranslate() back to the points' coords.

You're probably better off using sine and cosine functions reset the physical camera position. They give you a unit vector which you then multiply by the distance you want the camera from the point. Then you add the offset to the points coords and use that as your new camera position. There are a few tuts on vectors here on gamedev so I won't go into too much detail.