EddieJ,
You would need to:
1. Be running ArubaOS 6.3 and above
2. Have airgroup enabled so that it can collect Netbios machines names of users (airgroup is enabled by default).
3. Have AMON enabled on your Aruba Controller : http://community.arubanetworks.com/t5/Controller-Based-WLANs/Why-you-should-always-enable-AMON-on-the-controller/ta-p/175010 (not enabled by default).
4. Create a View in Airwave for listing your users that includes the "LAN Hostnames"
In your Aruba controller, you should be able to type "show user" on the commandline and one column called "Host Name" should have the LAN hostname. That is typically populated by enabling Airgroup. That is a prerequisite to seeing them in Airwave.