You can't. RAS doesn't support RADIUS and its a poor solution at best.
You should look into a Livingston Portmaster 2e30 for a real solution.
-- Dale E. Reed Jr. (daler@iea.com)_________________________________________________________________ IEA Software, Inc. | RadiusNT, Emerald, and NT FAQs Internet Solutions for Today | http://www.emerald.iea.com