And what would that "everything" have been??
Uninstalling LW and all Java versions on your computer, rebooting and then installing the newest Java version using the JRE offline installer downloaded from here:
http://java.sun.com/j2se/1.5.0/download.jsp
And after doing so, restarted the computer, re-installed LW and made sure to add LW to the exceptions of your firewall???
If you haven't done one of the above yet, well, then that would be my advice.