2. Don't forget you have a XP firewall. If using McAffee, then make sure XP firewall is disabled, else you will have problems. Recheck your McAffee settings to be sure LW is on its allowed list. You must make a firewall rule that gives LW full access thru its firewall.
6. & 14. Netgear devices normally have UPnP turned on by default.

You didn't mention which java you have. But I would recommend removing ALL java versions you have & downgrading to Java 1.5; see point #1 here Fixes for Limewire (click on blue link)

If 2.& java doesn't fix your problem, you may need to look at port forwarding. You will find your model here PortForward.com - Free Help Setting up Your Router or Firewall but FIRST thing you MUST do is set up a static ip: How to set up Static ip, then do the port forward steps.