bandwidth monitoring

Hello, I'll be moving into my college dorm tomorrow and found out that we're limited to 2 gb up/down per day restarting at midnight. If we go over this we get a warning then the banhammer. Any programs to reccomend that will allow me to monitor my daily bandwidth usage(for windows, please)?

well... apparantly they combine the upload and download here, since i just got my warning about going 100 mb over the 2 gig limit :/ i dont think a mac spoof would work either since they track by the account you're logged in from, not the hardware.