We summarize results from an on-going Hubble Space Telescope (HST) survey of
a large sample of ULIRGs (Ultra-Luminous IR Galaxies). New ground-based
multi-fiber spectroscopic observations are now being obtained to complement the
HST data and to assist in the interpretation of these complex objects.Comment: 2 pages; requires newpasp.sty. Paper to appear in the ASP Conference
Series for the May 2000 conference "Gas and Galaxy Evolution" (Socorro, NM),
edited by J. E. Hibbard, M. P. Rupen and J. H. van Gorko