how to show parentid only in front of first child

Hi,

   following query is from msdn

http://technet.microsoft.com/en-us/library/ms190766(v=sql.90).aspx

USE AdventureWorks;
GO
WITH Sales_CTE (SalesPersonID, NumberOfOrders, MaxDate)
AS
(
    SELECT SalesPersonID, COUNT(*), MAX(OrderDate)
    FROM Sales.SalesOrderHeader
    GROUP BY SalesPersonID
)
SELECT E.EmployeeID, OS.NumberOfOrders, OS.MaxDate,
    E.ManagerID, OM.NumberOfOrders, OM.MaxDate
FROM HumanResources.Employee AS E
    JOIN Sales_CTE AS OS
    ON E.EmployeeID = OS.SalesPersonID
    LEFT OUTER JOIN Sales_CTE AS OM
    ON E.ManagerID = OM.SalesPersonID
ORDER BY E.EmployeeID;
GO

following is the result

EmployeeID  NumberOfOrders MaxDate  ManagerID NumberOfOrders MaxDate
----------- -------------- ---------- --------- -------------- ----------
268         48             2004-06-01 273       NULL           NULL
275         450            2004-06-01 268       48             2004-06-01
276         418            2004-06-01 268       48             2004-06-01
277         473            2004-06-01 268       48             2004-06-01

q1)what i want is to show managerid only once in front of first child and rest of the child should have null managerid but should be in order so  that i can show them on web page.

q2) can it be done using hierarchy datatype, thought i do not have any one in my database but can it be used as temp

table datatype, and then that temp table can be used to get data in required format.

yours sincerely