I hate to spoil it for you but answers may not be as easy as that.
Turning off the firewall completely may not be a wise thing to do (especially if you use Windows).
You can try the guides for configuring firewalls for lim... er frostwire, that are provided here: http://www.limewire.com/english/content/firewalls.shtml

I know, I know, it's the LW site but they're virtually identical.

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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-