Java!!
 

I've tried installing LimeWirePro millions of times and each and every time it gets to the "Please Wait Installing Java" screen it locks up and doesn't continue installing. I have java already installed on my computer and run online prgrams that require java... but limewire is trying to install it again and its not happening. please help

its probably not locking up, but it takes awhile to download the java runtime if you have a slow connection.

my advice is to download the offline installer available here: http://java.com/en/download/manual.jsp

be sure its the OFFLINE installer so you can have a copy of it for future reference.