You will need to do port forwarding for your D-Link. 1. You will 1st need to set up a static ip (instructions are included) OK I'm not sure which version applies to you :
DI-624 OR
DI-624+ (you'll know once you see them.) 2. Do Port Forwarding using
Port 6346
3. Force IP:
Force IP instructions & sample image
4. Configure your firewalls to allow LW & Java full access:
http://www.limewire.com/english/content/firewalls.shtml
5. Look carefully at my previous post & update your Java. Java is exremely important for LW. If you delete LW's Prefs foldre you'll need to reset LW's options so make a note of all your settings before you delete them. It would have been best to do that before force ip.