UPDATE : OK... I can do it with graphics that have been loaded in from a .h file :
GpBitBlt(NULL, &gpDraw[nflip], 0 , 0, 60 , 40, (unsigned char*)gfx, 0, 0, 100, gfx_height);
But this is not what I want :-( I want to be able to move a chunk of the screen that has already been drawn....