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.