  We examine a realistic 3-band model, finding it capable of exhibiting the
d-wave pairing characteristic of CuO2-based high-Tc superconductors, but only
in the presence of symmetry-lowering charge-density stripes aligned along (1,0)
axes, preferably of diameter 2 cell-widths. The present theoretical treatment
has no adjustable parameters (the unit of energy t^2/V factors out of both
kinetic and potential energy terms,) does not require fine-tuning, and is in
qualitative accord with experiment.
