Make Sure that your not running Windows Firewall, with ZoneAlarm as they will conflict with each other. Best to turn Windows Firewall off and just use ZoneAlarm and make sure your giving Limewire full access through ZoneAlarm.
Also your Java is a little outdated. Try This version
Use the JRE offline installer & remove your current Java version before installing this one.
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11.
Everything else looks ok. Not sure about your ISP. Can't find out if they Block P2P. I don't find to much info on them.
Hope this helps.