Cisco 2821 HWIC wireless install

I am trying to install a wireless lan module into a Cisco 2821 router. The module gets power and seems fine from a hardware standpoint. However, the IOS doesn’t seem to recognize the radios as an interface. In the 1803 there was a Dot11Radio0 & 1 that you configured your wireless lan on.

Does anyone have a clue as to why the interface doesn’t show up?

=rk