Edward J. KERBER; Nelson B. Phelps; Joanne West; Nancy A. Meister, Thomas J. Ingemann, Jr., individually, and as representatives of plan participants and plan beneficiaries of the Qwest Pension Plan, Plaintiffs-Appellants, v. QWEST PENSION PLAN; Qwest Employees Benefit Committee; Qwest Communications International Inc.; Qwest Pension Plan Design Committee, Defendants-Appellees.