Ok here are your instructions to Port Forwarding your router, don't forget to set up your static IP number as well, all of the instructions for that are included in the link...
Port Forwarding for the Belkin F5D8230-4
Also once you have that sorted out, it may be best to use the JRE 5.11 Java...
Uninstall all versions of Java from the add/remove programs and then re-install the JRE 5.11 offline version....
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11
Deleting your prefernce folder can also help with connection problems...
Fixes for Limewire when LW isn't operating as it should