Router Integration with Active Directory

Hi there, I'm throwing this out there in hopes someone might be able to assist me. I am looking to integrate a Cisco Systems Wireless Router with Active Directory for the purpose of authenticating users. I want to integrate a home page that asks for a username and password and if it authenticates then then router will grant the user access to network. If you think you know what needs to be done to accomplish this or have any other questions please ask.