How do I write a SQL query for a specific date range and date time using SQL Server 2008?

Question

I need to write a query that will get all the rows in a specified date range and time range.

For example, I want to query all the rows from 5:00PM on 16-Sep-2010 to

Answer 1

How about this?

SELECT Value, ReadTime, ReadDate
FROM YOURTABLE
WHERE CAST(ReadDate AS DATETIME) + ReadTime BETWEEN '2010-09-16 17:00:00' AND '2010-09-21 09:00:00'

EDIT: output according to OP's wishes ;-)