Question : see who's using all the bandwidth on a windows network

I'm looking for tools that will show me who or what is using bandwidth on our windows 2000 network?

Answer : see who's using all the bandwidth on a windows network

http://www.experts-exchange.com/Networking/Misc/Q_21568081.html?sfQueryTermInfo=1+bandwidth+monitor

http://www.experts-exchange.com/Networking/Misc/Q_21727402.html?sfQueryTermInfo=1+bandwidth+monitor

http://www.experts-exchange.com/Networking/Misc/Q_22842703.html?sfQueryTermInfo=1+bandwidth+monitor

Some excellent suggestions on the above links.