Arduino based captive wifi portal

Hi, I'm stuck with this university problem...I'm trying to figure out if it's possible to connect an arduino with a wifi shield that is doing HOTSPOT (the arduino will not be connected to the internet) and force everybody who connects to visit via their browser a specific html file stored in an sd card and connected to the arduino [plus it would be awesome if everybody that is connected for more than 10 minutes is automatically disconnected]
Thaks a lot :confused: