  We state a conjecture which gives a combinatorial parametrization of the
irreducible tempered representations with real central character of a graded
Hecke algebra with unequal labels, associated to a root sytem of type B or C.
This conjecture is based on a combinatorial generalization of the Springer
correspondence in the classical (equal label) case. In particular, the
described modules turn out to have a natural grading for the action of W_0, and
are completely determined by their central character together with the
W_0-representation in the top degree. This latter is an irreducible
W_0-character which we call Springer correspondent.
