Переписать запрос с MSSQL Server2005 на Server2000

CREATE PROC HierarchyChart (@ID int, @ID_User int)
AS BEGIN

WITH tree(ID_Key, Parent_Index, Item_Level, Item_Name)
AS (SELECT     IDKey, ParentIndex, ItemLevel, ItemName
  FROM         base
  WHERE     IDKey = @ID
  UNION ALL
  SELECT     Base.IDKey, Base.ParentIndex, Base.ItemLevel, Base.ItemName
  FROM         base AS Base INNER JOIN
  tree AS tr ON tr.Parent_Index = Base.IDKey)
    SELECT     tree.Parent_Index,tree.ID_Key, tree.Item_Level, tree.Item_Name, Users.Id, PermissonType.Id AS Per_Id, PermissonType.PermissionType
     FROM         Users INNER JOIN
                            PermissionRecord ON Users.Id = PermissionRecord.Id_User INNER JOIN
                            tree AS tree ON PermissionRecord.Id_Base = tree.ID_Key INNER JOIN
                            PermissonType ON PermissionRecord.Id_PermissionType = PermissonType.Id
    WHERE Users.Id = @ID_User  
END