Thanks. Found this response to a similar question posted to MC Press:
In the v6.0 disk packet for WDSC there should be a CD called "Optional Software - CoOperative Development Environment and VisualAge RPG V6.0 component installation". Just pop that into your CD drive and it should auto-load the Java Install Shield.
CODE is found on one of the installation CDs. I don’t believe it was included on the installation DVD for version 6.