My tenant uses my wireless network and lately has been sucking up so much bandwidth that I can't even hold a connection on XBox Live for more than 10 minutes. She is on the guest network so is there any way to prioritize bandwidth on my Airport so that it knows to give the main network priority over the guest network and so if I'm on XBox Live or downloading a movie and she's downloading something of her own it'll give me at least 75% of the bandwidth and her only 25%?