Querying results by page

Row_Number()

SELECT Row_Number() OVER(ORDER BY UserName) As RowID, UserFirstName, UserLastName
FROM Users

From which it will yield a result set with a RowID field which you can use to page between.

SELECT * 
FROM 
    ( SELECT Row_Number() OVER(ORDER BY UserName) As RowID, UserFirstName, UserLastName
      FROM Users 
    ) As RowResults
WHERE RowID Between 5 AND 10