[ubuntu] Creating Ubuntu box as wireless router

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http://ubuntuforums.org – Hello everyone... We are currently doing a school project wherein we wanted to determine if there is a difference in latency between an out-of-the-box wireless router and an Ubuntu box configured to become a wireless router. We have installed Ubuntu 10.04. Unfortunately, we cannot make it up and running because our wlan card is not an Atheros-based (ours is RT2860) which is only recognized by madwifi. My question is that is there some other ways to do these besides madwifi? Can you please point us to the right direction? A tutorial or a link a blog if there is... I hope you can give us (Hardware)