Alas, my installation of Adobe Reader 7.0.8 was whacked. As soon as I deleted the installation from the defaults (C:\Program files\Adobe\...) and gave it a different path (C:\Adobe\...) it works just spiffy.
As a reference, using the JSP I of course had to write the PDFs to the web server, set permissions, etc. It's not terribly fast but it does work. And now we can export to Excel, CSV, ... all kinds of formats.
Thanks for staying with me as I worked through this. There are enough different places it can break that I was starting to lose it...
cheers,
Mike