For a start you will need to configue your firewalls to allow LW & Java access: http://www.limewire.com/english/content/firewalls.shtml & for norton see: Configuring Norton Internet Security (click on links)

What type of connection do you have? What brand name & model number of modem/router you use? Where are you connecting from (home, school, work)?

Give LW some time to attempt to connect.