AAARGH!
OK, I finally figured out that they were in the wrong place. Put all the RPMs in /usr/src/packages/rpms/
Problem is there are about 75 files, with so many dependencies, you can't install one at a time. Each just balks because it conflicts or has other dependencies, but you can't install that one because it has still MORE deficiencies.
There's got to be a way to just install KDE 3.3 AS A PACKAGE -- hasn't there?