Assign static ip based on MAC

Is there a way in the radius to assign static ip based on MAC either in config files or through a script. I want some MAC to always have a fixed ip on the LAN. Thanks Naeem. _________________________________________________________________ Invite your Hotmail contacts to join your friends list with Windows Live Spaces http://clk.atdmt.com/MSN/go/msnnkwsp0070000001msn/direct/01/?href=http://spa...