  For indices p and q, 1 < p <= q < infini and a linear operator L satisfying
some weak-type boundedness conditions on suitable function spaces, we give in
the Dunkl setting sufficient conditions on nonnegative pairs of weight
functions to obtain weighted norm inequalities for the operator L. We apply our
results to obtain weighted (Lp, Lq) boundedness of the Riesz potentials and of
the related fractional maximal operators for the Dunkl transform. Finally, we
prove a weighted generalized Sobolev inequality.
