Hi nicky_ruth
The Norton package you have, does it have a firewall package also? If yes, check it & double-check your XP firewall here: http://www.limewire.com/english/content/firewalls.shtml Also, what connecton devices do you have? Can you tell us the brand name & model numbers of the modem/rotuers you use please. If your modem/router uses NAT technology it will block most ports (we may need to show you how to open a port for LW.)