WINDOWS 2000 SERVER GROUPS  
Type of Group Members Built-in groups at install Comments
Built-in Global Groups (10) Domain Users   Groups common types of
  Domain Admins user accounts.  The Users OU
  Domain Guests contains the built-in global
  Enterprise Admins group.
  Schema Admins Default Administrators  
  Group Policy Creator Owner  
  Certificate Publishers  
  Domain Computers  
  Domain Controllers  
  DNS Update Proxy  
   
Built-in Local Groups (9) Account Operators  
  Administrators  
  Backup Operators  
  Guests  
  Pre-Windows 2000 Compatibility  
  Print Operators  
  Replicator  
  Server Operators  
  Users  
   
Built-in Domain Local Groups (4) DHCP Administrators To perform tasks on domain
  DHCP Users controllers and in the Active
  DNS Adminis Directory Store.
  RAS and IAS Servers  
  Predefined rights to user
  accounts.
   
Built-in System Groups (7) Everyone Exists on computer running
  Authenticated Users Windows 2000.
  Creator Owner You do not see system 
  Network groups when you administer
  Interactive groups, but they are available
  Anonymous Logon for use when you assign
  Dialup   rights to resources.