In LW click file then click connect. See if that helps. Also check your firewall settings again making sure LW has full access.

If that didn't work please provide us with more information please.

Computer type & CPU
Operating system and sp
HDD
RAM
Firewalls
LimeWire version
Java Version
Modem type and model no.
connection type (ASDL,DSL,Cable,Dialup)