The System.DirectoryServices.PropertySetAccessRule class represents a specific type of access rule that is used to allow or deny access to an Active Directory property set. For a list of property sets that are defined for Active Directory, see the topic Property Setshttp://msdn.microsoft.com/library/default.asp?url=/library/en-us/adschema/adschema/property_sets.asp in the MSDN Library at http://msdn.microsoft.com/libraryhttp://msdn.microsoft.com/library.