I have a client who runs a boarding house (mostly for international students). There are 5 rooms and people stay there for 2-weeks to 2 years. She gives them 50GB of broadband download per month on a wireless connection but they often use all the quota by mid-month and then everyone staying there is throttled back to dial-up speed (this is a common for ISP plans in Australia). Ideally she wants a way to limit each user to a certain download per month (say 10GB each) and then throttle just that user to dial-up speed allowing the others in the house to still have broadband. Does anyone have any ideas how I could set this up?