I am having the same problem. I have installed LimeWire to /root/bin, I have jre installed (under Suse8.1) to /usr/lib/java/jre/bin and have tried making a link with
"ln -s /usr/lib/java/jre/bin/java /usr/bin/LimeWire"

but get the same message:
" java: command not found"

If anyone has an answer to this, I would be glad to hear