A.J. extends his thanks to the Oxford Astrophysics Department for their hospitality. Support for program GO-9401 was provided through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in As- tronomy, Inc., under NASA contract NAS5-26555. A.J. acknowledges additional financial support provided by the National Science Foundation through a grant from the Association of Universities for Research in Astronomy, Inc., under NSF cooperative agreement AST-9613615, and by Fundacion Andes under project No.C-13442. P.C. acknowledges additional support provided by NASA LTSA grant NAG5-11714. D.M. is supported by NSF grant AST-020631, NASA grant NAG5-9046, and grant HST-AR-09519.01-A from STScI. M.M. acknowledges additional financial support provided by the Sherman M. Fairchild foundation. M.J.W. acknowledges support through NSF grant AST-0205960. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.