I want to implement table paging using this method:

SET @PageNum = 2;
SET @PageSize = 10;

WITH OrdersRN AS
(
    SELECT ROW_NUMBER() OVER(ORDER BY OrderDate, OrderID) AS RowNum
          ,*
      FROM dbo.Orders
)

SELECT * 
  FROM OrdersRN
 WHERE RowNum BETWEEN (@PageNum - 1) * @PageSize + 1 
                  AND @PageNum * @PageSize
 ORDER BY OrderDate ,OrderID;

Is there anything I should be aware of ? Table has millions of records.

Thx.

EDIT: After using suggested MAXROWS method for some time (which works really really fast) I had to switch back to ROW_NUMBER method because of its greater flexibility. I am also very happy about its speed so far (I am working with View having more then 1M records with 10 columns). To use any kind of query I use following modification:

PROCEDURE [dbo].[PageSelect] 
(
  @Sql nvarchar(512),
  @OrderBy nvarchar(128) = 'Id',
  @PageNum int = 1,
  @PageSize int = 0    
)
AS
BEGIN
SET NOCOUNT ON

 Declare @tsql as nvarchar(1024)
 Declare @i int, @j int

 if (@PageSize <= 0) OR (@PageSize > 10000)
  SET @PageSize = 10000  -- never return more then 10K records

 SET @i = (@PageNum - 1) * @PageSize + 1 
 SET @j = @PageNum * @PageSize

 SET @tsql = 
 'WITH MyTableOrViewRN AS
 (
  SELECT ROW_NUMBER() OVER(ORDER BY ' + @OrderBy + ') AS RowNum
     ,*
    FROM MyTableOrView
    WHERE ' + @Sql  + '

 )
 SELECT * 
  FROM MyTableOrViewRN 
  WHERE RowNum BETWEEN ' + CAST(@i as varchar) + ' AND ' + cast(@j as varchar)

 exec(@tsql)
END

If you use this procedure make sure u prevented sql injection.