Yes, I really do want to do this and thank you for your reply. However, I am getting some unusual results. My query is
SELECT *
FROM master_stock
WHERE symbol = 'BA'
OR symbol = 'BAC'
OR symbol = 'BMY'
OR symbol = 'CAT'
AND dtime
BETWEEN '2009-09-08 9:00'
AND '2009-09-08 17:00';

The last symbol is dropped from the report and the report begins at the first day of the data base, not on Sept, 8th. Any ideas. I really appreciate the help.