I finally buckled down and installed a document management system. I was looking at having to buy yet another hard drive to contain all of the I-gotta-save-this-it-might-be-useful stuff that builds up as a result of over 20 years of messing with computers.
I played with installs of Epiware, KnowledgeTree, and Alfresco. Of the three, Alfresco was the least evil (it was the easiest to install and does what I need). Epiware had issues with extra large PDFs and KnowledgeTree had install issues (it insisted that more instances of JDK, Tomcat, and MySQL were needed on my system).
In any case, I'll be working my way back through all of my kruft, deleting what's not needed, and cataloging (with Alfresco) the rest.
As always, notes for installing Alfresco are in the wiki.