Do you mean how to do the settings for LW? For LimeWire (LW), if you're using windows, go to the LW menu, select Tools>Options>Advanced>Firewalls or/& Proxies. For mac OSX users, go to menu & select the word LW >Preferences>Advanced>Firewalls /& Proxies.

You could always try sending Neo a pm.

* As well as proxies, you can try different ports without a proxy 1st. Apparently some isp's are known for sometimes blocking ports. Some to try are 3500, 1203, 20282, 80 (this last one is a last resort!) Enter the new port no. in the Listening Port section of the LW firewall option. Oh but if you have a router that doesn't utilise UPnP then you may need to forward the port to open it up. See http://portforward.com/routers.htm
You can also test the ports you try but you apparently need to have LW open at the same time for some strange reason (otherwise it may say the port's closed when it's actually open): http://home.no.net/tgrumpy/ct/dex.php
http://koti.mbnet.fi/gfactory/ctest/
http://jlh.no-ip.org/connectiontest/
http://www.grc.com/port_6346.htm (Press Probe this port button) Use the jump box to enter a new port number.