Ok we will start with BT... They taffic shape p2p connections during peak hours..
::. Kitz - ISP Caps, FUPs and Prices .::
Also your firewall would be comming from the modem/router you are using...It has what they call a Nat Firewall...
These instructions are to Port Forward, so limewire can pass through..
Port Forwarding for the BT Home Hub