Moss 添加用户组并赋予权限

给网站新增一个用户组“Members”,给用户组赋予“参与讨论”权限，并新增所有授权用户

SPRoleDefinition oRole = newWeb.RoleDefinitions["参与讨论"];

SPGroup oGroup = newWeb.SiteGroups["Members"];
SPRoleAssignment oRoleAssignment = new SPRoleAssignment(oGroup);
oRoleAssignment.RoleDefinitionBindings.Add(oRole);
newWeb.RoleAssignments.Add(oRoleAssignment);

oGroup.Users.Add("NT Authority\\Authenticated Users", "", 

 "NT Authority\\Authenticated Users", "");