> when and how i must insert "Xorp group". You need to create the UNIX "xorp" group and add yourself (or the username that would be running xorp) as a member of that group before you start XORP (though don't forget to logout and login after the change). How exactly you do this is UNIX-specific question. E.g., on Linux you may want to use programs like "vipw" and "vigr". Pavlin