Are you broadcasting your SSID's? If not, you might want to try that to see if you detect it with your PC. If your PC does not pick them up, try using Netstumbler to verify the AP is broadcasting the SSID.
I will assume you are using Windows. You should see the network popup for the SSID using Radius and then get prompted to enter your credentials.
You will not see anything on Radius until you at least attempt to associate.