Intruser: Maybe this doc will help you out:
www.mandrakeuser.org/docs/utils/ujava.html
It's a doc on installing Java and Limewire.
With Mandrake 9.0, sometime you have to uninstall Kaffe (a Java-version that Mandrake installs).
Just do, as root, in a consolewindow: urpme kaffe
(then follow the instructions in the doc, it's fairly clear.)
My Mandrake 9.0 complained that it needed kaffe for the wizzdrake whizzard. I just ignored this, and never had any problem.
Succes,
Marc.