p2p streaming

can anyone tell me how many mega bytes a 90 min football match will use

that's quite hard to determine. It depends on the quality of the stream and what TV p2p application you use. When I've previously used Sopcast/PPlive it used about 40k/s upload and 70-90k/s download. If you're worried about how much bandwidth it uses try installing NetLimiter which will limit the traffic the P2P app uses.