Norton antivirus is not a firewall.
Norton firewall is a firewall.
Norton Internet Security contains a firewall.
XP also contains a firewall. And chances are, if you have SP2, that the firewall is active. Go to www.limewire.com and then support. Read the part about firewalls and probably some of the facts too.

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iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

"Raise your can of Beer on high
And seal your fate forever
Our best years have passed us by
The Golden Age Of Leather"
-Blue Öyster Cult-