Thanks again! Let me see if I have this figured out now:
IBM JVMs: For 1.4.2, use Endorsed Standards Override Mechanism; for 1.5 and 1.6, works out of box?
Sun JVMs: For 1.4.2, use Endorsed Standards Override Mechanism; for 1.5 and 1.6, download Xalan binary distribution from Apache, put xalan.jar into classpath (we think).
Is that right? currently we only mention the Endorsed Standards Override Mechanism in connection with Sun, which would imply that the IBM 1.4 JVM is okay; but you say that for IBM "I think 1.5 (and later) satisfies the minimum requirement", which implies that IBM 1.4 users would have to use the override mechanism too.
We need information from an IBM person on this. I guess you will be testing the Sun situation when you get a chance.