experiencing the same situation here.
but what i m using upto now is,netcut 2.0 which is a freeware.u can google it.
winarpattacker also a freeware is out there.u can try if you want.
if you wanna check out whether u actually cut him or not,u can use wildpackets omnipeek or colasoft capsa.
google them if you want.omnipeek 5.1.4 is cracked these days.look for it.
both omnipeek and capsa can show what protocol a computer on a lan is using and how much bandwidth it is using.
u can use omnipeek peer map view or any other view that you prefer.
n i think u can also print out the bandwidth usage as an evidence.
basically,i use omnipeek and netcut pair.
i am on a home network with about other 20 people.
it was lightning fast before.
recently,the speed was down and 404 error every time i want to go to a site,even google.
so i run omnipeek and found that,
an ip address was using bittorrent protocol.
p2p ports were blocked before in our network with the old router.
somehow the landlord changed his router and must have left the p2p ports opened.
so i just cut that machine running torrent (identified by the ip address found out from omnipeek) with netcut,
works like charm.hope this helps.
just try.(dunno much about network stuff,i m just a software user,if i m wrong about anything,my bad)
ettercap might also work.but somehow i can't run ettercap on my box.so have to stick with netcut.
better luck for you.
