Doh! I don't suppose you saw the sticky at the top of this section about MSI errors.
1. Have a look at the last post about updating your installshield engines:
http://www.gnutellaforums.com/showth...threadid=29039
2. Do that, then update your Java:
Java 1.4.2 (click on link)
3. Then try installing LW again:
http://www.limewire.com/english/content/download.shtml