I have done all those insturctions above , Limewire did used to work until one day I loaded it and it remain minimized!!! , Then I removed LW and all Java then reinstalled Java 5 and LW then it was extremley slow so I did remove Java 5 and installed Java 4 and still its slow yes I have reinstalled everything replaced feature by feature and at the end I decided not to use Limewire either :

A ) I have too many software installed on my laptop
B ) Internet uses too much CPU

My laptop is very very clean in other words free from viruses , spam , spyware and all that....

So just use what your PC and you are happy with then this way your error-free!!!