My limeiwre wasnt connecting to the internet when i opened it up so i deleted it and downloaded it again. now whenever i open up limewire it says this message:

'Limewire was unable to instilize and start. this is usually due to a firewall blocking limewires access to the internet or loopback connections on the local machine. please allow limewire access to the internet and restart limewire'

how do i overcome this so limewire will open up.
Thanks