Hi,
I don't know if I understand your question correctly but if you're looking for a way to use Network Policies based upon wireless SSID's names this is the way I've set it up in our testing environment:
In the Network Policy I created a Condition based upon Called Station ID and gave it the following value:
^.*:SSID_Name$
This expression will match any NAS that provides the correct SSID name.
As I understand it, in a wireless environment the Called Station ID attribute will contain the following "MAC_address_of_the _NAS:SSID_Name".
More information in another thread on this forum:
http://social.technet.microsoft.com/Forums/en/winserverNAP/thread/12e8f94d-6719-49b2-99cc-b084757b6a3f