assign an ip pool for a user

Hello all ! I've just setup a radius server and it's working very good. thanks...god I have a question : can I assign an IP Pool to a user ? .Of course, I can do that by ACS server , but I have a lot users , and I want to set some policy for users... thanks and best regard __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com