CentOS - Apr 2008 - FreeRadius + Dynamic VLANs/802.1x Authentication

Has anyone setup FreeRadius to do automatic VLAN assignments on their
switches based on client mac addresses?  If so, would you be willing
to share your radius configs?  I haven't touched radius since mid 90's
and am stuck trying to get this to work.  It would be much
appreciated.

thanks

-- 
-matt