LW works fine for most people. There's probably an issue with the installation process. Uninstall both LW & Java & then downld both again but save their installers to the computer (Don't install over the net!!!) Then install them again. Downld Java here:
Java 1.5 (take the JRE) & LW from here:
http://www.limewire.com/english/content/download.shtml