Help creating a radius server

I need to be able to have a user log into a wireless workstation and log in with their network credentials and authenticate to the network.
For the radius server I am using a windows 2008 box, with Active Directory Certificate Services, Network Policy and Access Services, and Web Server roles installed.

I am using a Cisco Aironet 1300 Series as an Access Point.

At this point I cannot connect to the network. I am my own CA for the purpose of this internal connection. The workstation says it cannot find a certificate to log on to this network. I have created and installed (on the workstation) a certificate created on the server (Radius Server).

Any help would be appreciated.

cheers,
A Campbell