I would like to use limewire, but I installed it several times and restarted my IMac too, but always I see the same error message:

Unable to locate java


With the following message
java.lang.ClassNotFoundException: com.limegroup.gnutella.gui.Main
at com.zerog.lax.LAX.launch(Compiled Code)
at com.zerog.lax.LAX.main(Unknown Source)
at com.apple.mrj.JManager.JMStaticMethodDispatcher.ru n(JMAWTContextImpl.java)
at java.lang.Thread.run(Thread.java)

What can I do to Fix It?