You use a dial up modem. Then it's either SP2 or your ISP service that's the issue. Contact your ISP to find out if they have any policy against p2p use. See this about SP2: 
http://www.gnutellaforums.com/showth...threadid=28437 
It never hurts to update your Java. Try 
Java 1.4.x  OR else try 
Java 1.5 (take the JRE) 
Double-check your firewalls here: 
http://www.limewire.com/english/content/firewalls.shtml